Module produces error if imported more than once (PS v2 only)

[ALuckyGuy]

If the module has already been loaded and is then loaded again - for instance, by a script that has the import-module command embedded in it - then the errors shown below are produced.

Update-FormatData : There were errors in loading the format data file:
Microsoft.PowerShell, C:\Users\greenwt\Documents\WindowsPowerShell\Modules\PoshRSJob\TypeData\PoshRSJob.Format.ps1xml : File skipped because it was already present from "Microsoft.PowerShell".
Microsoft.PowerShell, C:\Users\greenwt\Documents\WindowsPowerShell\Modules\PoshRSJob\TypeData\PoshRSJob.Format.ps1xml : File skipped because it was already present from "Microsoft.PowerShell".
Microsoft.PowerShell, C:\Users\greenwt\Documents\WindowsPowerShell\Modules\PoshRSJob\TypeData\PoshRSJob.Format.ps1xml : File skipped because it was already present from "Microsoft.PowerShell".
Microsoft.PowerShell, C:\Users\greenwt\Documents\WindowsPowerShell\Modules\PoshRSJob\TypeData\PoshRSJob.Format.ps1xml : File skipped because it was already present from "Microsoft.PowerShell".
Microsoft.PowerShell, C:\Users\greenwt\Documents\WindowsPowerShell\Modules\PoshRSjob\TypeData\PoshRSJob.Format.ps1xml : File skipped because it was already present from "Microsoft.PowerShell".
Microsoft.PowerShell, C:\Users\greenwt\Documents\WindowsPowerShell\Modules\PoshRSJob\TypeData\PoshRSJob.Format.ps1xml : File skipped because it was already present from "Microsoft.PowerShell".
Microsoft.PowerShell, C:\Users\greenwt\Documents\WindowsPowerShell\Modules\PoshRSJob\TypeData\PoshRSJob.Format.ps1xml : File skipped because it was already present from "Microsoft.PowerShell".
Microsoft.PowerShell, C:\Users\greenwt\Documents\WindowsPowerShell\Modules\PoshRSJob\TypeData\PoshRSJob.Format.ps1xml : File skipped because it was already present from "Microsoft.PowerShell".
Microsoft.PowerShell, C:\Users\greenwt\Documents\WindowsPowerShell\Modules\PoshRSJob\TypeData\PoshRSJob.Format.ps1xml : File skipped because it was already present from "Microsoft.PowerShell".
Microsoft.PowerShell, C:\Users\greenwt\Documents\WindowsPowerShell\Modules\PoshRSJob\TypeData\PoshRSJob.Format.ps1xml : File skipped because it was already present from "Microsoft.PowerShell".
Microsoft.PowerShell, C:\Users\greenwt\Documents\WindowsPowerShell\Modules\PoshRSJob\TypeData\PoshRSJob.Format.ps1xml : File skipped because it was already present from "Microsoft.PowerShell".
Microsoft.PowerShell, C:\Users\greenwt\Documents\WindowsPowerShell\Modules\PoshRSJob\TypeData\PoshRSJob.Format.ps1xml : File skipped because it was already present from "Microsoft.PowerShell".
Microsoft.PowerShell, C:\Users\greenwt\Documents\WindowsPowerShell\Modules\PoshRSJob\TypeData\PoshRSJob.Format.ps1xml : File skipped because it was already present from "Microsoft.PowerShell".
Microsoft.PowerShell, C:\Users\greenwt\Documents\WindowsPowerShell\Modules\PoshRSJob\TypeData\PoshRSJob.Format.ps1xml : File skipped because it was already present from "Microsoft.PowerShell".
Microsoft.PowerShell, C:\Users\greenwt\Documents\WindowsPowerShell\Modules\PoshRSJob\TypeData\PoshRSJob.Format.ps1xml : File skipped because it was already present from "Microsoft.PowerShell".
Microsoft.PowerShell, C:\Users\greenwt\Documents\WindowsPowerShell\Modules\PoshRSJob\TypeData\PoshRSJob.Format.ps1xml : File skipped because it was already present from "Microsoft.PowerShell".
Microsoft.PowerShell, C:\Users\greenwt\Documents\WindowsPowerShell\Modules\PoshRSJob\TypeData\PoshRSJob.Format.ps1xml : File skipped because it was already present from "Microsoft.PowerShell".
Microsoft.PowerShell, C:\Users\greenwt\Documents\WindowsPowerShell\Modules\PoshRSJob\TypeData\PoshRSJob.Format.ps1xml : File skipped because it was already present from "Microsoft.PowerShell".
Microsoft.PowerShell, C:\Users\greenwt\Documents\WindowsPowerShell\Modules\PoshRSJob\TypeData\PoshRSJob.Format.ps1xml : File skipped because it was already present from "Microsoft.PowerShell".
Microsoft.PowerShell, C:\Users\greenwt\Documents\WindowsPowerShell\Modules\PoshRSJob\TypeData\PoshRSJob.Format.ps1xml : File skipped because it was already present from "Microsoft.PowerShell".

Another quick way to reproduce it:

import-module PoshRSJob
import-module PoshRSJob -Force

The errors are produced by the two commands shown below in PoshRSJob.psm1:

#region Format and Type Data
Update-FormatData "$ScriptPath\TypeData\PoshRSJob.Format.ps1xml"
Update-TypeData "$ScriptPath\TypeData\PoshRSJob.Types.ps1xml"
#endregion Format and Type Data

[proxb]

Yea, V2 seems to make more noise when type formatting already exists. Hopefully a Try/Catch can silence that issue.

[ALuckyGuy]

For reasons I don't understand, try/catch hasn't worked here. Really no idea why. I did find using -erroraction SilentlyContinue works, but that's not ideal either.

[proxb]

I don't really know of a good way to get around this in V2. I suppose -ErrorAction SilentlyContinue might have to be the answer. I need to look at this in DotPeek and see how it works in V3.

[ALuckyGuy]

Another way to do this is to define a variable after the Update commands and only do the update if the variable isn't defined. Doesn't give you a means to -Force an update of the type files, but then again since I don't think there's a command for uninstalling the type files, I think a PowerShell restart is necessary anyway in that case.

[proxb]

Bumping this to the next version so I can test a little more before pushing out an update.