A user crashed out of  MYOB AccountRight Enterprise the other day and when they tried to go back in, got the following error: 

 AccountRight Enterprise must terminate.

 Termination Code: 1233 error

  Important Details: Error -3000 in DMBegin transaction (5033:7020:4).

I asked another user to open the same file, but they also got this error.

This message means that the file is corrupted, so you can either restore from a backup, or run the “optimisation assistant” tool from the MYOB Tools menu from within the start menu.

This will run a repair and optimisation of the file and takes a few minutes depending on the file size.