No problem. :) Let me ask you, what type of guitar sound are you trying to compress? Like what would you best compare it to? Some clean sounds with heavier picks may bring on that pop thing you're talking about.
I notice in your signature that you mention Guitar Rig 5 and Amplitube Fender...are you using any compression inside the sound itself? If so...try backing that down a bit or cutting it out completely if you can just to see if it makes a difference in how the compressor you're using in your DAW works.
Another thing...and this to me is really important. If you ARE using those programs for your guitar sound, you should always compress the clean sound going to disc to condition it just a bit using a decent hardware compressor. I've done quite a lot of work and research for Acme Bar Gig, which is a company that does guitar plugs. In my testing, I have found that whenever I work with guitar sims that it improved my finalt outcome ten-fold by using a little compression going in.
I too would get a pop with my DI sound, but none of that seemed to ever transfer into the sim I used. But looking at my wave form of the DI, it would be spikey and even clip once in a while without the compressor going in. I have also found that hotter levels (at least -6dB) have been helpful as well with any type of guitar sim I use. Some guys use -10 or higher....I get a bit more sound going on with -6dB. But the pop thing only happens to me when I don't compress my DI a little bit. When I say a little bit, I'm talking -8 to -10 threshold, 1:5 to 2:1 ratio just to keep the signal a bit more in control. Just so it keeps me consistently at -6dB.
When I record a real amp or use my guitar tube pre-amp, I compress going in as well. It just keeps the signal consistent. Again though, nothing too strong.
So see if some of that helps. If by chance you are using a dirty sound, do you notice the pop thing more when you play certain chords/notes, or is it there no matter what? I think it's in your clean DI personally. Do you still get the pop using a real amp? If so...now I'm worried. LOL! :)
-Danny