Hi Patricia,
This 'error 120' is due to the program and report file being out of synch, and could also include the report table. An expected report variable being sent from the program could not be found from the (typically) older version of the report. Your installation is not set up correctly, which is why the instructions of doing a clean install was provided.
Do you use a ModRP modification of the Detail Listing report? If so, your modifications will need to be re-done to the most current RPT files from the \Softrak\Ledger\StandardRP directory to accommodate the updated report variables.
If you need to work with older versions of Ledger (or other Adagio programs), you can install them to a separate program location, such as X:\90C\Softrak\Ledger, where a different location of the root Softrak folder will keep things separated from the current versions.
Why does your client need to open the data with older versions of AR and GL? I can understand consultants needing this to support clients that haven't yet upgraded.
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Regards,
Softrak Tech Support