.NET Framework v4 not installed error(F1 Lookup)

Problem

After installing 7.2.5+ version of RTA, some users may find that when they try to launch some F1 Lookups that it throws an error saying that .NET Framework v4 is not installed.

Solution

This can be easily fixed by going into the fleet folder(wherever that may reside) and deleting out a file called "mscoree.dll".  After this file is deleted, this issue should be remedied.