If we're talking about application: there's no way to install two versions of System Manager on 1 machine, even you've separated the installation folders. The only option is to upgrade your Accpac 5.3 to version 5.5.
But I have this situation in my office:
- There're 3 users from Finance & Tax Department using database A that already been upgraded to accpac version 5.5
- There're 2 users from Procurement Dept using database A & database B. Database B is still in version 5.3
The problem is: Users that still use System Manager 5.3 can not access database that had already been upgraded to the newer version.
Since there's no way to install two versions of System Manager on 1 machine, especially for users from Procurement Dept, then I installed Microsoft Virtual PC to the workstations used by Procurement Dept users. The virtual PC contains System Manager 5.5.
So if they want to access Database A, they used the Virtual PC.
Stupid solution isn't it? If anybody has another solution for the case, please share :)