"A Web Part or Web Form Control on this Page cannot be displayed or imported. The type is not registered as safe."
I got this error message, when attempting to add a Pi Trend web part to a New page, What could be the fix for this??
If you this is the only webpart you've added to the page (i.e. You're sure that the OSIsoft webpart is the cause), I would check the web.config file in the wwwroot catalog for IIS. Make sure that the PI Webparts are marked as safe controls.
The error message is a standard Sharepoint/IIS message, so you can find lots of help on this topic by googling it.
If you can't resolve it I would contact techsupport. Maybe something has gone wrong with the installation of PI Webparts, everything should work fine without the need for editing the web.config file manually
this happens from time to time if you change some settings in your sharepoint websitecollection settings.
The setup from the OSI webparts will create some entries in the web.config of your website. The easiest way to fix the problem is to simply run the PI_WebParts_Config.exe found in C:\Program Files\PIPC\RtWebParts\bin which will recreate the entries in the web.config and mark the pi webparts as safe again.
Ingo, thanks for sharing =)
I got this problem also, I Installed webparts 2012R2 & Sharepoint 2007, I run the "PI_WebParts_Config.exe" Programe, the problem is sloved now.
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