737-700 and 737-600 Crash FSX

Hi

Each time I select the 700 or 600 NGX my FSX tells me the following:

"Visual model could not be loaded"

Then I am greeted with a fatal error! ^_^

This has been happening after I used the Flight1 Registry Fixer after the PMDG MD-11 was not aligning with the ILS properly. Funny thing is, the 800 and 900 load just fine...

advice?

Thanks

EDIT: DISREGARD!! Reinstall of the 600/700 pack along with uiautomationcore.dll fixed it for me:)