TFS 2010 :Queue new build failed

Question

Hi Everyone,
I have created a custom activity and placed the dll in the GAC.
It is working fine when i dragged that activity from toolbox onto my buildprocesstemplate.xaml.

But when i am trying to use only a share location like version control path to custom assemblies(which is in build controllers),It is showing the following error.
"TF21509:An error occured while initializing a build definition \CustomBuildTasks\BuildName:Cannot create
unknown type '{clr-namepace:NamespaceName,asembly=AssemblyName}Activityname'."

I have checked in the dll in the shared location and set the  version control path to custom assemblies which is in build controllers.I have followed the Ewald's blog

http://www.ewaldhofman.nl/post/2010/05/27/Customize-Team-Build-2010-e28093-Part-7-How-is-the-custom-assembly-found.aspx

But no luck.

Please let me know why exactly it is showing the error?And a step by step solution this one?

OR let me know which process is recommended?(GAC /Probing path/version control path to custom assemblies)?
Can u please help me..!

Thanks,
eswar reddy

Answer 1

If you put the assembly in the GAC, then you have to install it in the GAC of the build agent too. I prefer to add the assembly to source control and then set the version control path in the build controller. But to use this, add it to source control. Did you do that?

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Ewald - Please remember to mark the replies as answers if they help.


Blog: www.ewaldhofman.nl

Answer 2

1)I have placed it in the GAC,but not installed in the GAC of the build agent.Can you let me know where is the location of GAC of the build agent ?

2)I added and checked in the dll to the source control,and mentioned the version control path to assemblies which is in build controller properties, still getting the error?

Please help me..!

Answer 3

If you have 2 in place then you don't need to use the GAC.

When I get this error, I first verify whether the assembly name and namespace are correct with reflector of Red Gate.

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Ewald - Please remember to mark the replies as answers if they help.


Blog: www.ewaldhofman.nl

Answer 4

 Hey Ewald,

First of all,Thank you for your reply..!!!

My problem gets resolved.

This particular error is

"TF21509:An error occured while initializing a build definition \CustomBuildTasks\BuildName:Cannot create
unknown type '{clr-namepace:NamespaceName,asembly=AssemblyName}Activityname'."

because  I missed this attribute at class level [BuildActivity(HostEnvironmentOption.All)]. I have checked this one by removing and placing it successively.So the error is because of not placing that attribute.

[BuildActivity(HostEnvironmentOption.All)]

public sealed class CustomActivity : CodeActivity

{}

Answer 5

Great, and thanks for getting back with the solution. I have updated my blog post http://www.ewaldhofman.nl/post/2010/05/27/Customize-Team-Build-2010-e28093-Part-7-How-is-the-custom-assembly-found.aspx at the bottom.

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Ewald - Please remember to mark the replies as answers if they help.


Blog: www.ewaldhofman.nl

Answer 6

Thank you very much Ewald..!

And try to update this in part 4,

http://www.ewaldhofman.nl/post/2010/04/29/Customize-Team-Build-2010-e28093-Part-4-Create-your-own-activity.aspx

because some else get this problem, and he posted that one in part4.

Regards,

venkat

Answer 7

I'm having the same problem, but I can't (or don't know how) implement the suggestion here. My custom activity is not code based (it's workflow based). Is there anywhere else to set that attribute? (maybe editing the xaml code directly?)