Some background information may help.
- What operating system are you using, 32 or 64 bit, Windows or Mac, what version number
- What version of Manager are you currently trying to install / run
- Is this a Manager desktop or own server configuration
What do you do to cause the error, is it reliably reproduced when you do this?
You may have a corrupt database
can you move your data file to a new computer & installation for separate datafile issues from software installation issues