K-lite codec pack is interfering with truemotion codec.
Uninstall it,
re-install it and during setup choose microsoft default as AVI splitter
After install, in start menu go to k-lite, configuration and open ffshow video decoder. Under codecs tab, scrool down to truemotion1,2 and change it from libravcodec to disable. click on apply then ok
Retry ff7, it should work now
frostx