Encountered an improper property

[Dan1931]

I had  a persistent problem that would not go away.
There is one other thing you might try. Some times a file will get corrupted and cause all kinds of strange things to happen. Uninstalling and reinstalling a program will not always fix the problem. That is because uninstalling the program does not remove all the files.
You must go in to  the program and manually delete all the files and then uninstall and reinstall the program. 
That is the only way to assure that the program is is totally new.
Good Luck
Dan