Here is how to check it:
1. Go to "Start"
-> "Control Panel"
-> "Administrative Tools"
2. Next Double-Click on ".NET Framework Wizard x.x"
where x is the version #
2. A screen like the following will display. From here you want to click on "Trust an Assembly"
3. A wizard screen will display asking you if you would like to make a change to the computer or user.
From here, you select "Make changes to this computer."
and click "Next"
This will bring you to the following screen:
4. From here, you want to browse for the application file (EXE File) over the network that is giving you problems, and then choose "Next"
5. Make sure you change this security setting on the server and all workstations that you plan on using the application. Move the scroll bar all the way to the top to full trust.
Finally click "Next" ant then "Finish"
Hopefully this fixed the problem! If not and you were unable to complete these steps or some of these options were grayed out, please refer to Microsoft .NET Application Crashes Over Network - Part 3 to circumvent these user security privileges
This type of problem can be found on Windows XP, Windows Vista, Windows 7 or Windows 2003, Windows 2008 Server (32 or 64 bit versions).