We are seeing some instances where v 9 customers are recieveing a 1904 error:
Error 1904, modual C:\Program Files\solarwinds\EnginnersToolset This error message appears when the SWRGauge.dll becomes corrupt or is modified.
This issue can be resolved by simply reinstalling the software on top of your existing license.
If this does not resolve the issue please open a ticket with support-
Retrieving data ...