MDM 7.2 SP1 Issues with iOS mobile library and tasks

I have recently upgrade my MDM to 7.2 SP1.

And I encountered three issues with iOS devices.

1. I uploaded an document in (.epub) format and when I click download there will be a  "Unable to display: iOS does not recognize the contents of this file".

     The applications iBook and e-reader is installed on the device. Wouldn't the device use these applications to open the (.epub) file?

2.  I uploaded a working .ipa, png and ,plist to the mobile library.
    When I click download.

   Both the iosservices_2012.txt and MLFP.txt in the nlog folder has these error messages.

      "2012-10-29 14:15:18.8149 ERROR WebException in MobileLibraryFileProxy System.Net.WebException: The remote server returned an error: (401) Unauthorized.
      at System.Net.HttpWebRequest.GetResponse()
      at SymantecMobileProxy.MobileLibraryFileProxy.DownloadAndTransmitFile(String cacheFile, String cacheLockFile)
      at SymantecMobileProxy.MobileLibraryFileProxy.Page_Load(Object sender, EventArgs e)
   2012-10-29 14:15:19.2679 ERROR Failed to get content length, exception: Could not find file 'C:\Program Files (x86)\Symantec\Mobile Management\iosServices\plisttemp\500bba08-6133-4c7c-8cd2-e3587fbbaa8e-A721B57AEC691FA118E18C719F12C17FC73E2B8E.plist.xml'.

   Why wasn't the .plist.xml automatically created?
   When I copy the .plist file and rename it .plist.xml.
   The errors stop in the nlog and still I cannot download the application.

   There is also this error in the log of the SMP being repeated quite frequently.

   "Module: w3wp.exe
   Source: Symantec.Mobilemanagement.EML.EMLhelper.GetAppInstallState
   Description: GetAppInstallState called without app identififer"

   1 more thing I want to add is that when I opened the plist in the plisttemp folder, I notice these

   " <dict>
                           <key>kind</key>
                           <string>display-image</string>
                           <key>needs-shine</key>
                           <false />
                           <key>url</key>
                           <string>https://xxxxxxx/iosservices/MobileLibraryFileProxy.aspx?type=i&amp;guid=500bba08-6133-4c7c-8cd2-e3587fbbaa8e&amp;ph=A721B57AEC691FA118E18C719F12C17FC73E2B8E&amp;h=268B2F58C00D51039FC3A035BA6F670547C407BB</string>
                       </dict>"

   The path to the image did not end with .png. Could this be the issue?

3. I am unable to perform any device management tasks on the iPad (5.1.1).

   I cannot lock device, reset passcode etc. I have double checked that the APNS cert installed in my MDM is working. I am able to enroll perfectly and there is no error in the APNS_PUSH_2012.txt in the nlog folder. I am able to telnet to apple using the ports listed in the implementation guide. What am I missing? I followed the 7.2 SP 1 implementation guide.