Error Exec'ing P5.RTM

[yabindery]

I have Peachtree for DOS version 11, and by accident turned off the server while the bookkeeper was entering checks into the system. When we rebooted, and tried to go and "select invoices for payment", I got a message in red saying "Checks have been printed but not Updated. You must update checks before a new pay selection can be made". So I went and chose "Update A/P Checks", and when I clicked "Yes", I got an error message "c-tree fatal error #231" and sent me out of Peachtree to the DOS Prompt. When I again hit "Call Peachtree", it told me "Error exc'ing P5.RTM" and "Abnormal Program Termination" and won't let me back in . In order to go back into Peachtree, I have to open another DOS Prompt Window and I go through the same cycle again.
As a note, we manually make our checks, but post them to the system.

I would appreciate it if someone could tell me how to fix this, and also, even though one of the contributors gave me Disk 8, I still can't get the reports from "Peachtree Data Query".

Again, any help will be appreciated.