[AccessD] The Mysterious Case of the Missing Code

Hello All...and Good Morning (Niagara Falls, NY time anyhow)!
 
Well, it has been quite some time since I've requested any help from y'all...my job has included many non-access things lately...but I think this one might be a doozy...or, perhaps it is just me being brain-dead. I'll accept the latter, if it means finding a quick solution.
 
I went out on-site to one of our departments this morning, because they reported to me last week, that they couldn't see their data. I got into their program from my desk...I'm on the same network...and I could see their data fine...and I did it using their front-end program. So, I figured it was something simple like "trusted location" or a mapping issue...or something along those lines. 
 
When I got here, I did see that there was a trusted locations issue w/the first PC...it was newly installed and I expected that. BUT...now I am into the program and the data looks there, and the opening menu comes up, but no buttons work. This is because all the code behind the buttons seems to be gone. I looked at another menu...just the design view...and that code is gone too. To get even freakier, I opened up a backup from 2009...and that code is gone as well!
 
I used this same front-end from my PC on Friday...they share a front-end on the network...yeah, I know...but this is how they have it setup...I do plan on changing this for them, once it all is ironed out. This code was obviously there for me...I ran it. So, how is it missing now? I'm about ready to drive all the way back to my office to test this...I'm at a total loss. 
 
 
John W. Clark
Computer Programmer