Troubleshooting Flow Vision SC

If none of the troubleshooting questions or resolutions below address your issue, please contact us through live chat (click the icon at the bottom right of your browser window), email (info@alicat.com) or phone (+1.888.290.6060). We’ll do all we can to help you resolve your issue.

“Failed to Establish Serial Port Connection” or “Access is Denied” Error

  • This message occurs when multiple programs in Windows try to access the same serial port. For instance, if Flow Vision SC is open and connected to serial port COM4, and you try to connect to COM4 via another serial terminal applications (ie: Alicat Serial Terminal, PuTTY, etc.), you will see this error.

An installer error occurs

  • All installers (starting with Flow Vision SC version 1.3.18) now distribute a batch file that will run the installer and create a log file.
  • Alicat will need this log file in order to determine what is causing the installer to fail.

License key is “Expired” or “Invalid”

  • The current code is very strict about license keys and will only accept it if it is typed with the exact upper/lower case letters and exact dashes. There have also been issues in the past where copy/paste has caused it to be invalid (because of invisible whitespace characters). It is also a good idea to type it out manually. (Although copy and paste, as long as you are careful not to copy extra whitespace before or after the key, can work.)

Software was upgraded and now it won’t start or it displays errors

Example: Error message of “invalid or unknown” field, item or data.

  • Close the software and navigate to My Documents. You should see an “Alicat_Scientific” folder. Inside of it there will be folders for different software (Flow Vision SC/Flow Vision MX/etc).
  • If there is a setting configuration that you wish to keep, right click that folder (ex: “Alicat_Scientific/FlowVision_SC”) and send it to a ZIP file, and then send Alicat the ZIP file to have your files uncorrupted. Once uncorrupted, you can delete the folder and replace it with the unzipped and uncorrupted version.
  • If you don’t mind losing your settings configuration, simply delete the folder and start the software again (it will get recreated).

Device not found

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