The error popup shows this message on an English Operating System:
"AcuConnect - StartService: %1 is not a valid application of Win32."

And this on an Italian Operating System:
"AcuConnect - StartService: %1 non è un'applicazione di Win32 valida."

Verify the value of the Registry Key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\AcuConnect

It may be useful to modify the value of the key "ImagePath" from:

C:\Program Files\Micro Focus\Acucbl901\AcuGT\bin\acurcl.exe -startservice
to
"C:\Program Files\Micro Focus\Acucbl901\AcuGT\bin\acurcl.exe" -startservice

Double quotes may be useful to avoid any issue with paths which contain spaces.