We have a working application that we tested running through XenApp and our tests worked. Now it is in use and running on a few computers connected to the network wirelessly. This morning we started getting errors from some connections that a CDX cannot be read "error reading file tablename.cdx" and I tested this from my computer and got the same error. I tested it with two different published applications usually working in XenApp and got the same error from both applications. These applications have access to run via a mapped network drive. For XenApp to work we mapped the drive running CMD under the System network account. Again it worked fine for days this way. The drive is still mapped. Any ideas what might be causing this?