While attempting to upgrade Service Desk Plus I was doing a backup (backUpData.bat) when the batch job died with the following error:

java.io.FileNotFoundException: C:\ManageEngine\ServiceDesk\bin\..\fileAttachments\Request\
May2016\38791\Recovery.pdf (Access is denied)
        at java.io.FileInputStream.open(Native Method)
        at java.io.FileInputStream.<init>(FileInputStream.java:146)
        at com.adventnet.servicedesk.tools.SDBackUp.zipDirectory(SDBackUp.java:2121)
        at com.adventnet.servicedesk.tools.SDBackUp.zipDirectory(SDBackUp.java:2117)
        at com.adventnet.servicedesk.tools.SDBackUp.zipDirectory(SDBackUp.java:2117)
        at com.adventnet.servicedesk.tools.SDBackUp.zipDirectory(SDBackUp.java:2117)
        at com.adventnet.servicedesk.tools.SDBackUp.endBackup(SDBackUp.java:589)
        at com.adventnet.servicedesk.tools.SDBackUp.process(SDBackUp.java:104)
        at com.adventnet.servicedesk.tools.SDBackUp.main(SDBackUp.java:2433)

When I looked at the directory in question there were no files in it.  When I checked the backup directory it had one file in it; filelist.txt.

How can I fix this error..