This article troubleshoots an error that occurs when trying to create a thumbnail for a report that contains hidden tabs in the Web Portal.
When a user tries to create a thumbnail after running a report in Portal, they receive the following error message:
Message: Parameter is not valid.
Arguments: System.ServiceModel.FaultException`1[OneStop.Framework.Web.ServiceFault],Parameter is not valid.,System.ArgumentException: Parameter is not valid.
at System.Drawing.Image.FromStream(Stream stream, Boolean useEmbeddedColorManagement, Boolean validateImageData)
at OneStop.Toolkit.Drawing.ImageUtils.FromByteArray(Byte data)
at OneStop.Portal.Web.Services.ServiceHelper.FaultSafe(Action action, Boolean checkValidSession)
Debugging resource strings are unavailable. Often the key and arguments provide sufficient information to diagnose the problem. See
This error message occurs when you are trying to create a thumbnail for a report with hidden tabs. A common case for this would be where the Data Settings have been deleted from a report, but the hidden tabs for Data Settings and Interface still exist.
To correct the issue, follow these steps:
- Save a copy of this report.
- Right click on Sheet1.
- Select Unhide.
- Choose DataSettings.
- Right click on the DataSettings.
- Select Delete.
- Go through steps 2 through 6 for Interface as well.
When you have this done, save the report and re-upload it to Portal. You should now be able to use thumbnails for your report.