I deleted all Measurement Computing programs on the suspect laptop, then downloaded and reinstalled the 'InstaCal and Universal Library for Windows' to make sure I had the latest version. The HID updater did popup on first run of Instacal; and the updater said the update was successful.
However, still no luck communicating with the two modules. Both are recognized, with the correct SN; but both still hang whenever Config is selected. I've tried it on multiple PCs, including the laptop where the trouble started.
Is there anything else to try, or a both these modules dead?