Dear reader,
yesterday I started the upgrade from our 8.1 to 8.2 (small steps at a time). All went pretty flawless besides a stubborn issue when displaying a webresource with reportviewer. This webresource is defined in our invoice form (to display the invoice report ofcourse). When the form loads, it errors out. Tracing shows me this specific error:
Request failed with exception System.Web.HttpCompileException (0x80004005): c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\8226853f\1e6ff009\App_Web_reportviewer.aspx.d3c49f8c.7sxwo-xe.0.cs(257): error CS0433: The type 'Microsoft.Reporting.WebForms.ReportViewer' exists in both 'c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\8226853f\1e6ff009\assembly\dl3\5d2bf8a0\00f50ec3_5d01d301\Microsoft.ReportViewer.WebForms.DLL' and 'c:\Windows\assembly\GAC_MSIL\Microsoft.ReportViewer.WebForms\11.0.0.0__89845dcd8080cc91\Microsoft.ReportViewer.WebForms.DLL'
This seems pretty clear English to me, but I don't really get it. I presume the dll ought to be in the GAC in the first place. After cleaning the temporary asp.net files, resetting iis and reloading the form, the folder to the second dll immediately reappears.
.NET no-no that I am, I also renamed the dll in the GAC, ofcourse followed by a lot of "file not found" errors.
What could I try next?
Thanks for thinking along with me.
Best regards,
Jeroen
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