Some more information on this "The remote server returned an error: (500) Internal Server Error problem", and a workaround.
This error was returned to our Add-on application when calling the CompanyService.
We tested using AccountRight PC version and local Clearwater company files.
Our add-on is a Windows 10 desktop app using uses the MYOB AccountRight SDK.
We found that it only occurred where AccountRight 2020.2 was the first version to be installed on the PC.
If AccountRight had been upgraded from an older version, the error did not occur.
By uninstalling 2020.2 on a PC with the problem, then installing and uninstalling 2019.3 then reinstalling 2020.2 the error disappeared.
Note: We used 2019.3 as we had it readily available so cannot tell exactly which version we would have to have gone back to to fix the problem.
From this it would seem that a setting or file installed by 2019.3 is missing from the 2020.2 installation.
Has anyone else come across this or have any other suggestions why this is happening?
After further investigation we believe we have found the cause of this error:
The Add-on Connector (V 2.24.0318 and older) requires Microsoft SQL Server Compact Edition V3.5 to be installed.
AccountRight 2020.2 and 2020.3 now use and install Microsoft SQL Server Compact Edition V4.0, not V3.5 so the Add-on Connector does not work unless SQL CE V3.5 has previously been installed (either because an older version of AccountRight has previously been installed, or by some other means).
Check the subfolders of C:\Program Files (x86)\Microsoft SQL Server Compact Edition to see which versions are installed.
