Upgrade from 6.1.3.0 to 6.6.0.0 Error

Hi,
It seems that you have one font corrupted: Tahoma. What OS do you use?

I'm using Windows XP SP3 but RDM runs fine in earlier versions of the software

I changed my windows theme to no longer use Tahoma for any of the text and RDM started without a probelm. Not sure how that font got corrupted?

You can download it from another PC and replace it. This will resolve the issue