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The only known issues our software had with Windows Vista were limited to the programs using help files with the "HLP" file name extension. These problems were resolved as explained below:

Helpfiles with the "HLP" file name extension and Windows Vista

Windows Help (WinHlp32.exe) is a help program that has been included with Microsoft Windows versions starting with the Microsoft Windows 3.1 operating system. The Windows Help program (WinHlp32.exe) is required to display the traditional 32-bit help content files that have the "HLP" file name extension.

Windows Help is being deprecated for Windows Vista and the file WinHlp32.exe does not longer ship with the operating system.

To view 32-bit Help files with the "HLP" file name extension in Windows Vista, you will need to download and install WinHlp32.exe from the Microsoft Download Center: http://go.microsoft.com/fwlink/?LinkID=82148 .
This download provides the WinHelp32 engine for existing help applications.

One of the help systems now used by Windows Vista and compatible with previous operating systems down to Windows 98 is HTML Help (help files with the "CHM" file name extension).

A limitation of the HTML Help file system is that opening an HTML help file over the network fails. When displaying documentation in CHM format over the network, the content pane displays a message saying "The page cannot be displayed" or "Action canceled". This behavior is the consequence of a patch that Microsoft released in autumn 2005 in order to reduce security vulnerabilities in the HTML Help system. This is a problem if your application resides on your network and you expect to use the help file located there.

A workaround would be to modify or create the following registry entries (for more details, see Microsoft Knowledgebase article 896054) :

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x\HHRestrictions] "MaxAllowedZone"=dword:00000001

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x\ItssRestrictions] "MaxAllowedZone"=dword:00000001

This step must be performed on every client computer on the network to enable HTML Help.

Modifying the registry could make your computer inoperable. Make sure to back up the registry before you modify it and make sure that you know how to restore the registry if a problem occurs.

The following software, previously using the older 32-bit Help files with the "HLP" file name extension, has been updated to the newer HTML Help file system supported by Windows Vista (help files with the "CHM" file name extension):

Vidis
Vidis Lite
M-Minder
Copy-it Lite

(Duax Pro already used HTML help).

If these programs are downloaded from this site they will use the newer HTML help file system (your shareware registration key remains valid).
If older versions are used the file WinHlp32.exe must be downloaded from Microsoft and installed in Windows Vista in order to access the program's helpfile.

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