Problem:
After uninstalling an application, then attempting to open Micro Focus Net Express' help facility the following error is reported: :
Cannot open the file: mk:@MSITStore:C:\\ProgramFiles\\MicroFocus\\NetExpress5.0\\Base\\Help\\mfnetx50.chm
Resolution:
The problem is caused by the file hhctrl.ocx located in the System32 folder (or just System on some OS), it is likely that it has been overwritten by an application with an incompatible version of the file.
One way to resolve this error to reinstall the operating system .
Another alternative is to restore hhctrl.ocx. Look for it on the cabinet file from the Windows CD-ROM or download/copy a working version from an outside source or even from a backup. For example, download a working version from:
http://freeware.it-mate.co.uk/?Cat=OCX_Files
After downloading the file, copy it into C:\\windows\\system32\\
(or wherever the corrupted file resides) and overwrite hhctrl.ocx with the downloaded version.
Go to the start Menu and select Run the command:
regsvr32 C:\\windows\\system32\\hhctrl.ocx (or depending on the OS version the pathname where hhctrl.ocx resides)
