I'm trying to use an HTML form web part as a search feature on a data view on a page and then also send that same form value to connect to another list on that page. It is using the same field and using the same value.
It works fine when I use it for the first data view. When I add the connection to the second one and submit a value I get the error page
An unexpected error has occurred. Web parts maintenance page:.... I took off both connections and tried only applying it to the second list, this also throws the same error. I thought maybe the difference between a data view web part and a list web part might have something to do with it so I created a data view for the second list. This didn't fix the error either.
There must be something different between my two web parts but I have no idea what it is. I haven't used HTML form web parts often either so I don't know if they can be buggy or not. Has anyone encountered anything similar?