Peter, you probably have your anti-virus program still running in the
background that is interfering with InstallShield. Either that (or
perhaps along with) you may be having read errors from the CD drive.
I found an old case in our database from 1/31/94 (8 years ago!) that
listed this error message. That case was resolved by copying the program
disks to a folder on the hard drive and then running setup from there.
Also make sure you 'End Process' on your anti-virus program (don't rely
on 'Disable' from the systray at the bottom of the screen.)
peterhecker wrote:
> After replacing my HD I need to instal AS2.1 again. (I backed up my
> drawings but not the program.) Installing from CD fails, giving error
> message "Fatal Error at script line 44. Invalid arithmetical error."
> Installing from floppies gives a similar messge but the reference is
> to line 428. What can I do (other than buy the current version)?
> Thanks in advance to any helper(s).
> Peter Hecker.
> 24-Feb-02
--
Bob Felton
Autodesk Product Support, Americas
WW Support and Services, Autodesk
Discussion Q & A: <>
![Autodesk Design & Make Report](https://forums.autodesk.com/t5/image/serverpage/image-id/1350519iCB55845EBFC43016/image-size/large?v=v2&px=999" "Autodesk Design & Make Report")