Antivirus software may erroneously identify installation apps or OCXs as potential threats. Our customers encounter this problem from time to time, but the root of the problem is in the antivirus software - their threat databases or heuristics they use to check executable contents. Our software is digitally signed and should not contain any viruses or threats of another kinds. You can report this problem to the developer of the antivirus, but in many cases the problem goes away on its own.
As for your technical questions you asked in the email, there is a problem in your code and iGrid warns you about it by displaying the corresponding error message. I'll describe all this in detail in my email answer.