Meridian Enterprise Server runs background tasks to generate thumbnail images.
The task processes each document as follows
To troubleshoot thumbnail image generation:
Run the program BCSyncUtil.exe (64-bit only. Run BCSyncUtil32.exe for 32-bit) with the following arguments. By default, it resides in the folder C:\Program Files\BC-Meridian\Enterprise Server:
BCSyncUtil.exe /THGen /InFile:"C:\Temp\MyTestFile" /OutFile:"C:\Temp\thumbnail.jpg" /Width:"400" /Height:"400"
If thumbnail generation is working properly, the output file will contain an image of the input file.