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Error contacting the license server in The Observer XT 16
Early versions of The Observer XT 16 may need to updated if using a software-based license, due to changes in the license server.
Using the MediaTypeRegistryCleaner
When video files will not play in EthoVision XT, especially MP4 videos, this tool can often resolve the issue. Media File Error (Id 8356) may be a symptom in such cases.