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Harry_Seth15-Moonstone
15-Moonstone
January 13, 2021
Solved

Error "Conversion failed. Could not start Mathcad conversion process".

  • January 13, 2021
  • 2 replies
  • 7492 views

Issue:

  • Error "Conversion failed. Could not start Mathcad conversion process" while converting legacy Mathcad worksheets in Mathcad Prime

OR

  • Mathcad Prime with parallel installed Mathcad 15.0 does not convert .xmcd files to .mcdx with error message:
    Mathcad conversion process could not be started.

 

conv.jpg

 

Resolution:

There are two options to resolve this issue:

 

Option I:

  • Find Mathcad Prime shortcut on desktop > right mouse click > Properties
  • Select Compatibility tab
  • Under Privilege Level section check option check Run this program as an administrator
  • Apply > OK

Option II:

  • Click Start > Programs > Administrative Tools > Component Services
  • Under Component Services, select Computers > My Computer > DCOM Config
  • Select Mathcad, right-click, then select Properties
  • Select the Security tab
  • Click #Edit under #Access Permissions
  • Select the System User and allow Remote Access rights
    Best answer by GerardLardner

    They did help, and remarkably quickly.

     

    I don't know if this is universal or just my PC, but the AlfaSoft tech guy in Sweden checked to confirm that the Mathcad 8.0 Installation Assistant did indeed not run on my PC and that nothing obvious was blocking it. He then tried Mathcad Prime 9.0 and that did run, did install Mathcad Converter and... it works!

     

    Could it be that there is an incompatibility between the Mathcad 8.0 Installation Assistant and Windows 11? I don't know. I just know that the problem was solved by upgrading me to Prime 9.0.

    2 replies

    A
    Ali_Ihsan1-Visitor
    1-Visitor
    January 14, 2022

    Hi,

    I'm getting the same error. I'm trying to convert some Mathcad 15 files and use them in Prime 7.0.0.0 (trail license). 

     

    Above solutions didn't work. Any idea how to convert them otherwise?

     

    Cheers,

    Ali

    V
    24-Ruby III
    VladimirN24-Ruby III
    24-Ruby III
    January 14, 2022

     Hi Ali,

     

    Read this article - "[Knowledge Hub] How to use the "XMCD, MCD Converter" application tool to convert worksheets which were created in earlier versions of Mathcad to Mathcad Prime?": https://www.ptc.com/en/support/article/CS22570 

      A
      Ali_Ihsan1-Visitor
      1-Visitor
      January 15, 2022

      Thank you. I managed to convert the files.

        G
        GerardLardner10-Marble
        10-Marble
        March 10, 2023

        Hi, I have a similar problem. Conversion fails every time. I have tried the steps above but with no success.

         

        At first the message was that .NET 3.5 could not be found; it is installed; later it said "Conversion failed. Could not start Mathcad conversion process". The exceptions log file notes

         

        Exception data:
        System.Exception: E_FAIL_MATHCAD_COM_WAS_NOT_STARTED ---> System.InvalidCastException: Unable to cast COM object of type 'System.__ComObject' to interface type 'mcautomation.Application'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{0F8C5F99-AE35-11D1-B19D-0060971E663A}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).
        at ConverterLoader.XmcdToMcdxConverter.StartMathcad15ComServer()
        --- End of inner exception stack trace ---
        at ConverterLoader.XmcdToMcdxConverter.StartMathcad15ComServer()
        at ConverterLoader.XmcdToMcdxConverter.TryConvertWorksheet(String originalFileName, String destinationFileName)
        at ConverterLoader.XmcdToMcdxConverter.ConvertWorksheet(String originalFileName, String destinationFileName, String mathcadVersion)

         

        The PC is a Dell Latitude 5540, Windows 11 Professional, Mathcad Prime 8, lots of engineering thermodynamics and music software installed.

         

        Can you help?

        V
        24-Ruby III
        VladimirN24-Ruby III
        24-Ruby III
        March 11, 2023

        Try to create a new "Support Case", here:

        G
        GerardLardner10-Marble
        10-Marble
        March 13, 2023

        Hi ValdimirN, Thanks for the reply. No luck so far; the supportCentre leads me through a dozen or so completely unrelated help articles, which do not remotely address the issue. Attempting to open a support case either asks for a SCN or directs me back to the vendor (AlfaSoft) – PTC does not want to address issues affecting smaller business users who cannot justify a Service Contract.

        I have spent 4 hours today trying to follow instructions from the PTC Support website and just going in circles. If I had not so many years of worksheets from Mathcad 2001-15, I would have ditched Prime years ago. It’s just too much hard work to get simple things to work.

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