error

Error: Could not load the selected type library

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This is a common error, which can be caused by following reasons:

  • an automation is missing
  • the automation was missing, then installed on the system, but the nav object was not re-compiled after installation
  • a different version of the automation is expected by the nav object.

If this error occurs, check where the variable is defined (local or global variables list). After you found the variable, you will see, that the value in field Subtype is like “Unknown Automation Server.Application”. When exporting the Nav object as text file, you would find a subtype value like that: Class1@1000000010 : Automation “{D1233675-2BBA-49DD-AD90-1680A404EAD5} 1.0:{DB3E185E-C123-46C2-9C62-F4A4E81E0B8F}:’FunnyAutomation’.Class1”. If you don’t know exactly what you are missing, this strange looking subtype value can help you for research.

Next step is – and that is the importand one – remove the value in field subtype! Do not click on the Assist button first and choose the automation without removing the value. It won’t work! So, first remove the value, then click on the Assist button and search for the missing automation.

If you do not find the missing automation, then look for the setup file and install the automation. After that restart the CC Client and start this fix procedure from the beginning. If you don’t know, which automation is missing (maybe an old code, a code of a different developer, …), then start with a research, ask your colleagues, your PM, do a little web search or find an alternative solution.

If all is fine, the automation is installed and the Unknown… value was removed, find and choose the automation after clicking on the Assist button and select the needed embedded class of the automation. After that re-compile the Nav Object and test the whole thing.

cheers

Error, when creating an instance of a .net class

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Following error can occur, when creating an instance of a .net class in C/AL:

Reasons:

  • If the assembly is used on client side (property RunOnClient=True), then the assembly was not copied to the local Add-ins Folder of the RTC Client. To copy the assembly into this folder you need in most cases Admin rights. So, check that first.
  • If the assembly is used on server side (property RunOnClient=False), then there might be a version conflict between the assembly file located in the Add-ins Folder of the Nav Service and the used version in the C/AL Code. That can easy occur after installing Updates. So update the code and restart the nav service.
  • Missing System permission: That means, that the assembly was copied from the web or from a computer outside the local network to a target computer/server with windows server OS. Then, the assembly is automatically blocked by the system.

You cannot create an Automation object ‘name of autom.’ on Microsoft Dynamics NAV Server. You must create it on a client computer.

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This is an error message, when trying to create an instance of an automation on a nav server vs. >= 2013. It’s only possible to create the automation instance as client instance. Creating automation instances on nav server is allowed till nav 2009.

solution:
use create(<name_of_autom.>,false,true) instead of create(<name_of_autom.>).

remarks:
you need a installed version of the automation on each client computer.

links:
create fct.: http://msdn.microsoft.com/en-us/library/dd355255(v=nav.70).aspx
Usage of automations in nav 2013: http://msdn.microsoft.com/en-us/library/ee909565(v=nav.70).aspx
Usage of automations in nav 2009: http://msdn.microsoft.com/en-us/library/ee909565(v=nav.60).aspx