Markoz wrote on Mar 12^th, 2014 at 10:16am:

...I take it you can't do a repair by running the installer again and using a "repair" option? In my Window 7 Control Panel\Programs and features, when I right click on PXXG_MD11_FSX, I get the option to Uninstall or Change, when I select Change, I get he installer window (don't know what else to call it) open with 3 options - Modify, Repair, and Remove. Try the repair from that.

Mark,

Thanks for your answer.

I did it several times (repair option), including installing and uninstalling FS and the add-on. No joy. :-/

I think the only solution to solve the problem is to format the new HDD, installing only W7, FSX and Kaspersky Internet Security, not copying any previous files, where must be a hidden bug due incorrect add-on uninstall, and giving a try to watch if FS is running well.

If so (I hope), I will install all others programs including MS Office 2010 and adding their important files who are stored in an external HD. Nothing more.

I'll keep my fingers crossed! ;)

Please tell me what do you think.

Thanks.