Game Crashing every five minutes! HELP!!!

[GamerX51]

Every time I try to play the game, it crashes my entire computer every five or twenty minutes. It's completely random, it doesn't happen everytime, and the game doesn't leave any memory dump files when it happens.

Do I have a memory or video card problem? I'm running 2 NVidia Geforce GTS 240's SLI, if that matters.

<Edit/> I just looked in the steam folder, and I found this in the debug txt file:

[0429/171557:WARNING:backend_impl.cc(1930)] Destroying invalid entry.
[0429/171557:ERROR:backend_impl.cc(1186)] Critical error found -8
[0429/171557:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/171557:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/171557:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/171557:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/171557:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/171557:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/171557:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/171557:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/171557:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/171557:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/171557:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/171558:ERROR:entry_impl.cc(917)] Failed to save user data
[0429/171558:ERROR:cache_util_win.cc(48)] Unable to move the cache: 5
[0429/171558:ERROR:backend_impl.cc(134)] Unable to move cache folder
[0429/171558:ERROR:backend_impl.cc(2123)] Corrupt Index file
[0429/181059:ERROR:backend_impl.cc(1186)] Critical error found -8
[0429/181059:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/181059:ERROR:cache_util_win.cc(48)] Unable to move the cache: 5
[0429/181059:ERROR:backend_impl.cc(134)] Unable to move cache folder
[0429/181059:ERROR:backend_impl.cc(2123)] Corrupt Index file
[0429/215921:WARNING:backend_impl.cc(1619)] Messed up entry found.
[0429/215921:WARNING:backend_impl.cc(1619)] Messed up entry found.
[0429/215921:WARNING:backend_impl.cc(1619)] Messed up entry found.
[0429/215921:WARNING:backend_impl.cc(1619)] Messed up entry found.
[0429/215921:WARNING:backend_impl.cc(1619)] Messed up entry found.
[0429/215921:ERROR:backend_impl.cc(1186)] Critical error found -8
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215921:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:ERROR:entry_impl.cc(917)] Failed to save user data
[0429/215922:ERROR:entry_impl.cc(917)] Failed to save user data
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:ERROR:entry_impl.cc(917)] Failed to save user data
[0429/215922:ERROR:entry_impl.cc(917)] Failed to save user data
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:ERROR:entry_impl.cc(917)] Failed to save user data
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215922:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:ERROR:entry_impl.cc(917)] Failed to save user data
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:WARNING:storage_block-inl.h(125)] Failed data load.
[0429/215923:ERROR:entry_impl.cc(917)] Failed to save user data
[0429/215923:ERROR:cache_util_win.cc(48)] Unable to move the cache: 5
[0429/215923:ERROR:backend_impl.cc(134)] Unable to move cache folder
[0429/215923:ERROR:backend_impl.cc(2123)] Corrupt Index file
[0430/081554:ERROR:backend_impl.cc(2123)] Corrupt Index file
[0430/081554:ERROR:cache_util_win.cc(48)] Unable to move the cache: 5
[0430/081554:ERROR:backend_impl.cc(134)] Unable to move cache folder
[0430/081554:ERROR:backend_impl.cc(264)] Unable to create cache
[0430/125953:ERROR:backend_impl.cc(2123)] Corrupt Index file
[0430/125953:ERROR:cache_util_win.cc(48)] Unable to move the cache: 5
[0430/125953:ERROR:backend_impl.cc(134)] Unable to move cache folder
[0430/125953:ERROR:backend_impl.cc(264)] Unable to create cache

Could this be what's causing the crashes? I did delete one of my old savegames from the steam folder.

[GamerX51]

Can't anybody help?