I had the same problem and the same error message with one of my clients earlier today.
We needed to create a new company in Adagio. the GL, AR and BR worked nicely.
But when we created the AP data, we received the same error message.

We tried this a few times with the same results.
Our installation was onto a network drive.
So, I gave it a try by creating the new company on the local c: drive in a separate folder.
This time this worked properly with no errors. The new company data is now created, albeit in a stand-alone local drive.
The next phase was to copy the relevant data files to the network drive.

Once we completed everything, the AP was working properly with the other modules. I preformed a DIC (Data Integrity Check) to verify the data files - the Check returned a No Errors message.

You can ask your dealer to help you with this, or send me an email/call me if you would like assistance with this.

Samuel Kopstick
T: 416-785-8637
samuel@skassociates.ca