This article was created in response to a support issue logged with K2. The content may include typographical errors and may be revised at any time without notice This article is not considered official documentation for K2 software and is provided "as is" with no warranties.
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Issue

CombinedResource.ashx shows a 500 Internal Server Error on the SmartForm Runtime site.

Symptoms

This is related to a CSS file/theme issue. When you run F12 Developer Tools from your browser or a Fiddler Trace, you should notice an error similar to the image below:

Image

Troubleshooting Steps

To resolve the issue, kindly apply these steps:

1. Make a backup of the following web.config files prior to editing them:

a. K2 SmartForms runtime web.config file (C:\Program Files (x86)\K2 Blackpearl\K2 SmartForms Runtime)

b. K2 SmartForms desginer web.config file (C:\Program Files (x86)\K2 blackpearl\K2 Smartforms Designer)

2. Under the <appSettings> node there are two keys:

<add key="UseBundledFiles" value="false" />
<add key="Forms.PostRenderCombining.Enabled" value="false" />

3. Set both values to 'false'.

4. Save and close the file.

5. Perform an IISRESET to apply the changes made.