When launching OpenInsight using the Universal Driver 4 error FS1104 Group 2101 can occur if OpenInsight was previously configured to use the Universal Driver 5 but then switched back to Universal Driver 4.
Check the directory containing oinsight.exe and verify the size of the rcl4.dll file correlates to the Universal Driver displayed by netdrv.exe
To use the Universal Driver 4.7 rcl4.dll should be 1024 KB in size.
To use the Universal Driver 5 rcl4.dll should be 948 KB in size.
Note: When installing Universal Driver 5 the original rcl4.dll file is renamed rcl4.Pre50. This is usually the rcl4.dll for Universal Driver 4.7 renamed. To use the file simply rename rcl4.Pre50 back to rcl4.dll.