When opening any QuickBooks Desktop Company File, you receive the following error:
You may also find the following error in the Window Event Viewer log:
To Resolve this Error
In this example, there is a ProWin08 folder on the C:\. This is what causes the COM error in QuickBooks.
NOTE: If you have ProSeries 2008 or other years of ProSeries, then most likley you have a folder left behind, which was not removed when you uninstalled that year of ProSeries. In other words, lets say we uninstalled ProSeries 2008 and the folder is left behind. The left behind folder is what causes this problem.
You may see BaseWin0x, if so, then you will want to rename those as well, as long as you do not longer use those versions.