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Wonder if anyone can help? I'm having a problem with the Source SDk in that it won't let me open anything. (See attached image)
I've tried the obvious - in that the drop-down 'Current Game' menu should be selected first, but when I click the down arrow, it shows up as being blank.
A week ago, it was working fine, and I had the choice of CS: Source or HL2...now they've disappeared, yet both games are on my HDD.