As I understand this error means that the file can not be found.
2018-11-30 09:12:04.795 [INFO ] Importing UEM settings '[filename].zip' (\\[flex repository server]\FlexConfig\general\FlexRepository\Settings\File\[filename].zip)
2018-11-30 09:12:04.858 [ERROR] ImportFiles::ImportFile: Error 2 on 'UserProfile/My Documents/MaestroConfig/mas.ini'
2018-11-30 09:12:04.858 [ERROR] ImportFiles::ImportFile: Error 2 on 'UserProfile/My Documents/MaestroConfig/mas.MOS'
2018-11-30 09:12:04.873 [INFO ] Successfully imported settings ('[filename].xml')
The .zip file contains several files and folders. Only those two files are not being extracted to the users profile.
VMWare UEM agent 188.8.131.522 running on a Windows Server 2016 session host. No antivirus running on the session host nor on the flex repository server.
Those two files can be extracted manually from the .zip and placed in the users profile directory without any errors. Have tested with two different users.