Hi colinbashbash2,

For the load balancing environment, you need to set the TempDirectory to a central location to support to upload large file. If you have not set it yet, then please do this setting and try again.

1. Setting temporary file location in web.config

   
   

   Add an entry into the <appSettings> section of your application web.config file:

   
   

   <add key="CuteWebUI.AjaxUploader.TempDirectory" value="~/UploaderTemp"/>

   
   

   In web farm environments, the Url that you specify must map to a central location, which is saved to by all servers in the farm. This can be done using a virtual directory that maps to a common shared folder on the network.

   
   

   <add key="CuteWebUI.AjaxUploader.TempDirectory" value="\\shareserver\temp"/>

Regards,

Ken