When attempting to run a report, an error message states: 'Failed to Create the Crystal Query Engine'.

Solution 1:
There may be mismatched Crystal report DLLs in the system32 directory.
Rename the CRPE32.DLL file in the C:\Windows\System32 directory to CRPE32.DLL.OLD and reinstall the program.  A new CRPE32.DLL file will be installed that should match all the other dll versions.

Solution 2:

You may have Crystal Reports installed and the dll needs to be re-registered.
1. Quit Crystal Reports.
2. On the Windows taskbar, click the 'Start' button and then click 'Run'.
3. Type: 'regsvr32 "C:\Windows\System32\crqe.dll"'.
4. Click 'OK'.

A message appears indicating the file is successfully registered. If the file does not register correctly, try solutions 2.

You may need to locate the crqe.dll if it is not in the c:\windows\system32 direcotry. In this case, on the Windows taskbar, click the 'Start' button > Find (or Search) > Files and Folders. Enter crqe.dll and perform search. Note the location and substitue the path to register this file.