Hi Chrisine
I had this exact same problem with a client. I am the Adagio consultant so I had to help myself
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I ended up renaming the \Softrak\Ledger folder, as well as the QRTAL?90.QRW files from the \QRASP folder and the @L90*.ssi files from the \Softrak\Dict folder, and then re-installing Ledger from scratch (then copying the old Ledger.INI to the new Ledger folder so that certain user settings were preserved). It worked.
But now that you report the same error, it really makes me think there is a problem with the install somewhere.
Steve