A few days ago my mod stopped working for no apparent reason, I went to compile a map I got a message saying that valve needed to change the file system of HL2: Ep2, once this process every time I try to start my mod (or any other Internet downloaded) appears on the loading screen a white box and I get the following error:
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Error!

Can not find background image 'material/console/ep2_bacgorund01_widescreen.vtf'
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I tried to extract these images with GCFscope and put them in the correspondent directory but does not correct the problem.