id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
5809	Allow multiple installations on the same Windows PC	massimo ceraolo	Adeel Asghar	"I have a production model (a three-phase PWM inverter) that works perfectly, i.e. without warnings or messages and with correct results, on a relatively old OM version (1.14.0-dev234).

It doesn't work anymore with recent nightly builds. When asked to run this model, they issue several runtime errors and then stop simulating.

Instead of creating a ticket on this issue, I would like to first by-section to help developers to understand what change spoiled the previous correct behavior.

At present, to test several OM versions one should either 
- have many PCs and install one OMEdit per PC
- un-install and re-install versions several times, 
- create several virtual machines, each of them containing an OM.
All of these options are either very costly and/or complicated and/or time-consuming so that to discourage any attempt.

In case it is possible to install several OM versions on the same PC, the procedure would be greatly simplified. Today's hard disks are so large that it is not too demanding to have dozens of versions installed.

"	enhancement	new	high		Installation program