Upgrade to MC15 Is it a wise choice?

Is there anything driving you to upgrade? If not, then why do it?

TTFN

Filip De Somer wrote: I was told that I could do this but that I would be no longer allowed to use MC11 and MC15 on the same computer. Mister Cedric Geslin told me that this was the official standpoint of PTC. I would like to understand if this is really the case.

I think there are two aspects to that: whether you are allowed to do so legally and whether there is anything that physically stops you from actually doing so.

The license agreement for 15 says:

1.10 Upgrades: If the Licensed Software was licensed as an upgrade from a previous version, Customer must first be licensed for the Licensed Software identified by PTC as eligible for the upgrade. After installing the upgrade, Licensed Software licensed as an upgrade replaces and/or supplements the product that formed the basis of Customer’s eligibility for the upgrade and Customer may no longer use the original Licensed Software that formed the basis for Customer’s upgrade eligibility.

I am not a lawyer, but here's my interpretation of what that would mean:

It clearly means that contractually you are not allowed to use version 14, because that is what you are upgrading from. If the license agreement for 14 was the same (and I don't know that it was - the relevant version of the agreement would be the one that was in effect when you upgraded) then that would mean you are currently also not allowed to use 11, because you upgraded from 11 to 14. I think that removing 14 when you upgrade to 15 would not reinstate your right to use 11. However, your second post implies that when you upgraded from 11 to 14 the only licensing requirement was that you not use 11 and 14 at the same time. If that is the case then Cedric Geslin is wrong, because the basis of your upgrade would be version 14, not version 11, and so the upgrade only removes your right to use version 14.

As far as physically running the versions simultaneously goes, when you install version 15 the only version it will actually remove is version 14. Other versions will still be there (I have 11, 13, and 15 installed). There is a bug in the installer though that is something of an annoyance (Mona: could you please log this). When it removes version 14 it deletes registry entries that can break the installation of previous versions, so after installing version 15 you will need to repair the installation of all previous versions, finishing with 15. The problem is that the version 15 repair does not work correctly: it just exits without doing anything. Consequently, the automation interface remains bound to an earlier version, in my case version 13. Consequently, if no version of Mathcad is open and I double-click on a file it launches version 13, not version 15. This is very irritating, but it's not a complete show stopper because if a version of Mathcad is already open it will open the file in that version. You will have a similar problem if you try to launch Mathcad from any external application via the automation interface.