Installation not allowed

[LG_10879274]

I can not install MathCadPrime Version 7, but I need it to exchange data with my colleagues. This is not about the trial edition. It is about the real edition of MathCadPrime 7. The failure message is: "Nicht zulässig".

[VladimirN]

Please show a screenshot of the error you are experiencing.

[LG_10879274]

Please find attached a screenshot of the error.

[BenLoosli]

No screenshot!

[LG_10879274]

How could I add or attach a screen shot to the post? 

[LG_10879274]

[LucMeekes · Accepted solution]

You possibly already have Prime 8 or 9 installed on your PC.

You cannot install Prime x when Prime x+N (where N>0) is installed. You have to install Prime versions in ascending order.

If this is your case, you could remove the higher versions from your PC and install 7, then 8 and/or 9.

Success!
Luc