When you are trying to set up the Intuit Sync Manager you are getting Error 18_201 and are not able to set up the sync manager.
To fix this issue you will need to rename the Sync Manager settings folder.
Warning! If you have multiple files set up to Sync, renaming this folder will remove all files from the Sync Manager and will need to be reset for each company file.
To rename the Sync Manager folder:
After renaming that folder, you should be able to re-open QuickBooks and set up the Sync Manager without any other problems.