Your Cell Cable is most likely failing.
An open circuit or short circuit between conductors is resulting in strange data and a failed calibration.
Do you have a spare cell cable that you can swap with to continue?
Microsoft is Ending Support for Windows 7
Microsoft will discontinue support for Windows 7 on January 14, 2020 which means Gamry will also be discontinuing support for Windows 7. If you are upgrading to Windows 10, like many companies and institutions, you need to be running Version 7 of our software. Please note that only USB and Ethernet-based instruments can run in Version 7. Eligible users can download the latest version of our software through our online Client Portal.
If you haven’t already registered your instrument, you can do so through the Client Portal.
Please email Technical Support if you have any questions regarding this transition. Please be sure to include your instrument model and serial number when contacting us.