An Error Occurred While Starting OPMN Integrated Standalone Reports Server

While starting an OPMN integrated Standalone Reports Server via OEM, the following error is encountered :
An error occurred while starting "Reports Server: ".
 : ReportsServer - time out while waiting for a managed process to start
For more information, look at the logs using the related link below.
Related Link Error Logs

Cause
The value specified in the "REPORTS_TMP" environment variable was invalid because there was no directory named "C:\DOCUME~1\dev\LOCALS~1\Temp\1".

Solution
To implement the solution, please execute the following steps :

1. Go to Windows Registry.
2. Navigate to HKEY_LOCAL_MACHINE -> SOFTWARE -> Oracle.
3. Select the HOME under Oracle where the Oracle 10g Application Server is installed.
4. Change the value of the "REPORTS_TMP" environment variable from "C:\DOCUME~1\dev\LOCALS~1\Temp\1" to an existing directory. For example  "c:\tmp".
5. Now start the Reports Server and it will start properly.