Visual Studio 2012 crashes while adding data source for view
Unfortunately this is a known issue in both Visual Studio 2012 and Visual Studio 2013 and is mentioned in this Microsoft Connect bug.
A workaround was posted on this MSDN blog.
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I also had this problem. I was able to add reports to a new project, so I knew there was a problem with my project. After much trial and error, I decided that I have some unnecessary links that were carried over from an older project. The links were incorrect and some dependencies were missing. After removing these links, my problem was resolved.
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I ran into this error after migrating a project from VS2010 to VS2012 recently.
The fix that worked for me was to open the .rdlc in a text editor and look for tags that contain the path to the dataset used in the report. They looked like this:
<rd:SchemaPath>.......some path.....</rd:SchemaPath>
In my case, the path was the old path to where the source was previously saved when I was working in VS2010. I changed the project location on my PC and this path is no longer valid.
So I updated the path to the correct location, saved the RDLC and everything works fine.
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