Method invocation failed because [System.Management.Automation.ScriptBlock] doesn't contain a method named 'op_Addition'.

[Jason Jarrett]

After downloading the "featured" download from google code, I followed the steps to "import-module psake" (on this blog http://www.jameskovacs.com/blog/ReleasingPsakeV100PsakeV200.aspx) and when I execute that command it appears to work.

I then copied the default.ps1 (from the examples) into my project root directory (where I was going to start creating the build).

I then type "psake" at the command hoping for it to work and the following error was printed to the screen.

Any thoughts?

Method invocation failed because [System.Management.Automation.ScriptBlock] doesn't contain a method named 'op_Addition

'.

At C:\Users\jasonj\Documents\WindowsPowerShell\Modules\psake\psake.psm1:528 char:23

+     $script:properties += <<<<  $properties

    + CategoryInfo          : InvalidOperation: (op_Addition:String) [], RuntimeException

    + FullyQualifiedErrorId : MethodNotFound

You cannot call a method on a null-valued expression.

At C:\Users\jasonj\Documents\WindowsPowerShell\Modules\psake\psake.psm1:469 char:36

+     Assert (!$script:tasks.ContainsKey <<<< ($taskKey)) "Error: Task, $name, has already been defined."

    + CategoryInfo          : InvalidOperation: (ContainsKey:String) [], RuntimeException

    + FullyQualifiedErrorId : InvokeMethodOnNull

Property 'default' cannot be found on this object; make sure it exists and is settable.

At C:\Users\jasonj\Documents\WindowsPowerShell\Modules\psake\psake.psm1:471 char:16

+     $script:tasks. <<<< $taskKey = $newTask

    + CategoryInfo          : InvalidOperation: (default:String) [], RuntimeException

    + FullyQualifiedErrorId : PropertyNotFound

You cannot call a method on a null-valued expression.

At C:\Users\jasonj\Documents\WindowsPowerShell\Modules\psake\psake.psm1:469 char:36

+     Assert (!$script:tasks.ContainsKey <<<< ($taskKey)) "Error: Task, $name, has already been defined."

    + CategoryInfo          : InvalidOperation: (ContainsKey:String) [], RuntimeException

    + FullyQualifiedErrorId : InvokeMethodOnNull

Property 'test' cannot be found on this object; make sure it exists and is settable.

At C:\Users\jasonj\Documents\WindowsPowerShell\Modules\psake\psake.psm1:471 char:16

+     $script:tasks. <<<< $taskKey = $newTask

    + CategoryInfo          : InvalidOperation: (test:String) [], RuntimeException

    + FullyQualifiedErrorId : PropertyNotFound

You cannot call a method on a null-valued expression.

At C:\Users\jasonj\Documents\WindowsPowerShell\Modules\psake\psake.psm1:469 char:36

+     Assert (!$script:tasks.ContainsKey <<<< ($taskKey)) "Error: Task, $name, has already been defined."

    + CategoryInfo          : InvalidOperation: (ContainsKey:String) [], RuntimeException

    + FullyQualifiedErrorId : InvokeMethodOnNull

Property 'compile' cannot be found on this object; make sure it exists and is settable.

At C:\Users\jasonj\Documents\WindowsPowerShell\Modules\psake\psake.psm1:471 char:16

+     $script:tasks. <<<< $taskKey = $newTask

    + CategoryInfo          : InvalidOperation: (compile:String) [], RuntimeException

    + FullyQualifiedErrorId : PropertyNotFound

You cannot call a method on a null-valued expression.

At C:\Users\jasonj\Documents\WindowsPowerShell\Modules\psake\psake.psm1:469 char:36

+     Assert (!$script:tasks.ContainsKey <<<< ($taskKey)) "Error: Task, $name, has already been defined."

    + CategoryInfo          : InvalidOperation: (ContainsKey:String) [], RuntimeException

    + FullyQualifiedErrorId : InvokeMethodOnNull

Property 'clean' cannot be found on this object; make sure it exists and is settable.

At C:\Users\jasonj\Documents\WindowsPowerShell\Modules\psake\psake.psm1:471 char:16

+     $script:tasks. <<<< $taskKey = $newTask

    + CategoryInfo          : InvalidOperation: (clean:String) [], RuntimeException

    + FullyQualifiedErrorId : PropertyNotFound

[James Kovacs]

The command is invoke-psake to match PowerShell's verb-noun syntax. (This was changed when psake was re-written as a PowerShell v2 module.) You can alias it if you would prefer a shorter syntax. I just tried it locally with the latest bits and was successful. Let us know if invoke-psake doesn't work on your box.

James
--
James Kovacs, B.Sc., M.Sc., MCSD, MCT
Microsoft MVP
http://www.jameskovacs.com
jko...@post.harvard.edu
403-397-3177 (mobile)

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[Jason Jarrett]

That worked, thanks for the clarification...