In my case this message begun after I changed UNIGUI version.
Was necessary to adjust in server module, EXTJSVersion to 7.5.1
I recompiled again and cleared the cache folder.
The problema was solved
Is there any report tool that works with UNIGUI in Linux ?
I Have Fast Report VCL 6 Enterprise but the components stay grayed when i change the plataform from win32 to Linux 64.
I did tests with ReporBuilder and the same occour