@Axel Vogt If an anti-virus program is preventing Java programs from starting up, the only method to diagnose this would be to temporarily disable the offending program and see if the problem is resolved.
I did specifically mention at the bottom of my reply that the user should turn back on all programs that were disabled after the testing session is complete. The five minutes that an anti-virus program is disabled to perform these tests should not adversely affect the security of the system if all you are doing is launching Maple.
If it is found that the anti-virus program is indeed the cause of the non-start, you should find a way to add the Maple executable file to the anti-virus' allowed programs/whitelist to prevent these issues in the future without compromising your computer's security. Each vendor has their own method for authorizing programs, so I would suggest contacting your respective anti-virus vendor if you are having troubles locating the program exceptions list.