There is a breaking change with the latest binaries in case you have a custom upload handler
. To get a param value you should not
and you should replaced it with this.GetQueryParameter(paramName).
It is not OS related, but related to the latest of version of the binaries and the RadUploadHandler.dll that you are referencing in your Web project.
Please apply the change and let us know if you have any more problems with this.
The reason for the change is that now we support multiple files upload in a single request. That is why all file specific parameters are prefixed with the file index.
Please let us know how it goes!
the Telerik team
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