I had similar problems using Charter's F-Secure antivirus software.  Not sure what caused it, but was able to tell F-Secure to download the software anyway, and it installed with no further problems.  Also had a similar issue with ACE for the 737 after installing V1.6, and they sent me just the ACE update and it works fine.  Very happy with the 737.

Re not being able to post new topics, you need to have 10 replies before being able to create a new post topic.

Jim Kaye