Help !

When i inject a dtx (all is good,it says ok and i renamed it and deleted the old one) and i start combat arms it crashes just after the man stops running (when i should get to the login screen)
So why is this happening ?
Any tips on what have i done wrong (even though im sure i did it all ok )

Happens to me too sometimes, you have to ensure that you closed RezInject, otherwise the file will be opened in RezInject and therefore CA won't be able to access the file.