Using a Wiz device with recent version of EEGer can produce a series of error messages that prevent the software from being opened after a fresh installation or after updating an existing installation of EEGer. There are two conditions in which this error may occur:

  1. EEGer is configured for a Wiz device, but the amplifier is disconnected from the computer when opening EEGer.
  2. EEGer is configured for a Wiz device, but the COM Port changes (a different Wiz device is connected instead of the original).

In both situations, the user may receive several warning messages on their screen, as well as possible crashing with error messages. This issue will persist each time EEGer is opened until a setting is adjusted in the Options menu. To avoid this issue, follow these steps:

  1. Connect the amplifier to the computer. When opening EEGer, it should automatically detect the device and configure itself.
  2. Navigate to Options>EEGer Configuration Options from the top toolbar of EEGer’s main screen.
  3. In the menu that appears, click on the Special tab and locate 9 Check amplifier once at startup. Uncheck this option.
  4. Press Close preferences window to apply changes and return to EEGer’s main screen.
  5. Close the software and reopen it - no error messages should be observed at this stage relating to the amplifier, and the configured device should remain as Wiz.
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