"errors were found" "try installing again" Mesg on Mac G4

I have downloaded TBS v3.0 on my mac g4 x10 version 10.2.8 and on final step of installation, I read a message :ERRORS FOUND TRY INSTALLING AGAIN… I have tried seeral times including downloadid the files from ToonBoom.com again with the same results.

Has anybody encountered this same problem?

Please let me know.