infoRouter needs to create temporary files during uploads and searching.
infoRouter uses two different temp folders:
One is defined in the application settings. By default it is C:\TEMP.
This folder used for large temporary files such as zipping folders and documents and paging through large search results.
The location of the secondary temp folder changes based on your OS.
Make sure the path specified in the error exists and the ASPNET or the NETWORK SERVICE account has full controlpermissions to this path.
Make sure that the NETWORK SERVICE has full control to the C:\Windows\tmp directory.