Admin - importing resources - There was an error uploading the resource file"

We are looking to update some plugin resources to change any references to 'friends' so we started by exporting any plugin resources 

When I try to import the revised file I get an error message "There was an error uploading the resource file", it looks to be the ValidateImport request which is failing but it gives no meaningful advice ? 

{"Message":"There was an error processing the request.","StackTrace":"","ExceptionType":""}

I have also tried simply exporting and re-importing the resources and this fails in the same way even if I don't edit anything

Looking in the xml file some entries had some strange values re Ideation


<plugin name="Idea Webhooks" type="›‹.&#x10;Œ, Telligent.Evolution.Ideation" version="12.0.3.17950">
<languageResources>
<language key="en-us">
<resource name="IdeaCreated">Idea Created</resource>
<resource name="IdeaCreated_Description">Sends event data to registered webhooks when an Idea is created.</resource>
<resource name="IdeaDeleted">Idea Deleted</resource>
<resource name="IdeaDeleted_Description">Sends event data to registered webhooks when an Idea is deleted.</resource>
<resource name="IdeaUpdated">Idea Updated</resource>
<resource name="IdeaUpdated_Description">Sends event data to registered webhooks when an Idea is updated.</resource>
</language>
</languageResources>
</plugin>
<plugin name="Idea Webhooks" type="›‹.š‹, Telligent.Evolution.Ideation" version="12.0.3.17950">
<languageResources>
<language key="en-us">
<resource name="IdeationCreated">Ideation Created</resource>
<resource name="IdeationCreated_Description">Sends event data to registered webhooks when an Ideation is created.</resource>
<resource name="IdeationDeleted">Ideation Deleted</resource>
<resource name="IdeationDeleted_Description">Sends event data to registered webhooks when an Ideation is deleted.</resource>
<resource name="IdeationUpdated">Ideation Updated</resource>
<resource name="IdeationUpdated_Description">Sends event data to registered webhooks when an Ideation is updated.</resource>
</language>
</languageResources>
</plugin>
<plugin name="Idea Webhooks" type="›‹.&#x6;Œ, Telligent.Evolution.Ideation" version="12.0.3.17950">
<languageResources>
<language key="en-us">
<resource name="IdeaStatusCreated">Idea Status Created</resource>
<resource name="IdeaStatusCreated_Description">Sends event data to registered webhooks when an Idea Status is created.</resource>
<resource name="IdeaStatusDeleted">Idea Status Deleted</resource>
<resource name="IdeaStatusDeleted_Description">Sends event data to registered webhooks when an Idea Status is deleted.</resource>
<resource name="IdeaStatusUpdated">Idea Status Updated</resource>
<resource name="IdeaStatusUpdated_Description">Sends event data to registered webhooks when an Idea Status is updated.</resource>
</language>
</languageResources>
</plugin>
<plugin name="Idea Vote Webhooks" type="›‹.&#x1;Œ, Telligent.Evolution.Ideation" version="12.0.3.17950">
<languageResources>
<language key="en-us">
<resource name="VoteCreated">Vote Created</resource>
<resource name="VoteCreated_Description">Sends event data to registered webhooks when an Idea Vote is created.</resource>
<resource name="VoteDeleted">Vote Deleted</resource>
<resource name="VoteDeleted_Description">Sends event data to registered webhooks when an Idea Vote is deleted.</resource>
<resource name="VoteUpdated">Vote Updated</resource>
<resource name="VoteUpdated_Description">Sends event data to registered webhooks when an Idea Vote is updated.</resource>
</language>
</languageResources>
</plugin>

I removed these and it now seems to load but there appears to be an issue with these plugins ?