Mathcad Prime 3.1 Crashing

Forum|Forum|10 years ago
October 1, 2015
3 replies
9141 views

I have been having problem with Mathcad Prime 3.1 crashing lately. First, when I load my files, some random equations will be red-circled as "Unknown Error: mpl%_Exception". (see attached image). As soon as I start changing the values on my worksheet, Mathcad would crash.

At first, I thought it might be migration issue from my Prime 2.0 file to Prime 3.1, but I realized even if I try a simple calculation in a new file, Mathcad would crash.
ex. a:=1m, b:=2m, c:=a+b= (see attached image)

I am now stuck, not being to load any of my worksheets. Could anybody offer any suggestion or explanation?

I am running Mathcad Prime 3.1 Express, on Windows 7 service pack 1, 64bit. Intel Core i5-3470 CPU 3.20GHz, 8 GB RAM. I did try reinstalling the software with same result.

Thanks in advance for helping out.

Statistics_Analysis

Best answer by tselvan

Uncheck Multithreading option if it is checked, from Calculation tab > Calculation options. Check if that helps?

L

LucMeekes

23-Emerald IV

Do you get the same error with:

a:=1m

b:=2m

c:=a+b

c=

i.e. NOT using the = in the asignment statement?

T

thuang

Author

1-Visitor

LucMeekes, you seem to be right on the spot.

No, it does not crash if the = is not used in the assignment statement.

L

LucMeekes

23-Emerald IV

Do you use Prime (full) or Prime Express.

In my Prime 3.1 Express, having the = in the assignment to c isn't a problem.

There could be a bug in Prime (full) for this, or there's something wrong with your installation...

Success!
Luc

V

VladimirN

24-Ruby III

Dou you have a "Microsoft .NET Framework 4.5.1" installed on your Windows OS? And you need a better to use Mathcad Prime 3.1 64-bit version on PC (how to setup 64-bit version can be found in the attached file).

System requirements for Mathcad Prime 3.1:

2_Mathcad_Prime_Installation_Instructions.pdf

T

thuang

Author

1-Visitor

Hello Vladimir,

Thanks for the advice. I verified my installation as follows:

Yes, I used the 64 bit of version of MathCAD Prime 3.1
Yes, Microsoft .NET Framework 4.5.1 is installed, also 64 bit version

So I did not change any setup. The problem of crashing persists when the file consists of "=" and variable assignment are written in the same line. As soon as I change any value of a variable triggering re-calculation, Mathcad crashes

Terry