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I have several lists across our entire sharepoint server that have custom xsl:stylesheet's. These are webparts of lists both internally to the site collection and to external data on our sql common data server. The common problem factor in all these webparts is the xsl:stylesheet.
I am getting the error above on all the lists that have some sort of customisation whether it be just a simple text color change or a complex custom layout.
All of these webparts were working great before July 10th when I left for vacation.
When I came back from my vacation I was informed that a specific list was not working and I went to work attempting to figure it out. In order to get it working I simply had to take out the custom xsl:stylesheet. This works, however when I went back to asses the rest of the site today I found that all of the webpart lists that included the custom xsl:stylesheet are not working.
I discovered that there were several server updates on july 10th sent down from Microsoft.
I believe that one of the updates caused this but not sure which one or how to stop this from happening again.
If you have any idea please assist.