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Also, consider that Windows 7 is outdated, and running modern software on it might have issues beyond just Camtasia. Suggest upgrading the OS if possible, for security and performance. However, if upgrading isn't feasible, staying with an older version is the workaround.

: Ensure you select the correct driver for your specific machine (e.g., PNC1200 or Concept 2000) and set it as the default within the Misc -> Setup Baud Rates i download casmate pro 652 windows 7 top