Dear,

I have experiencing problem at showing Chart (using Webgrid) on my production, the chart sometime displays successfully, but most of the time failed.

The same piece of code works fine my development machine.

When I review the IIS log, I found the following error ... 500 response code on request to ISChart.axd.

2011-02-01 09:26:47 10.14.141.69 POST /HomeSummaryBooking.aspx - 80 - 10.14.141.185 Mozilla/4.0+(compatible;+MSIE+8.0;+Windows+NT+5.1;+Trident/4.0;+CMDTDF;+InfoPath.1;+.NET+CLR+1.1.4322;+.NET+CLR+2.0.50727;+.NET+CLR+3.0.4506.2152;+.NET+CLR+3.5.30729;+.NET4.0C;+.NET4.0E;+OfficeLiveConnector.1.3;+OfficeLivePatch.0.0;+AskTB5.6) 200 0 0 268

2011-02-01 09:26:47 10.14.141.69 GET /ISChart.axd imageId=85c24a26-e656-49e2-a523-f929fdd6e6e5&imageFileServer=undefined&imageFormat= 80 - 10.14.141.185 Mozilla/4.0+(compatible;+MSIE+8.0;+Windows+NT+5.1;+Trident/4.0;+CMDTDF;+InfoPath.1;+.NET+CLR+1.1.4322;+.NET+CLR+2.0.50727;+.NET+CLR+3.0.4506.2152;+.NET+CLR+3.5.30729;+.NET4.0C;+.NET4.0E;+OfficeLiveConnector.1.3;+OfficeLivePatch.0.0;+AskTB5.6) 500 0 0 28

We are using Windows 2008 R2, IIS 7.5 with 3 worker processes, the Managed Pipeline Mode of the Application Pool is Classic

I have already followed the instruction

http://www.intersoftpt.com/Support/WebUIStudio/Tutorial/Text/Configure-Intersoft-products-to-run-in-IIS7-environment/

Please help on how to fix the problem.

Many Thanks

Kenny