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If you have been using TransferText to import and export files that did not have any extension in their names, then installing
Jet40SP3.exe (Updated version of Jet 4.0) will cause
your code to stop working. The information in this article is obtained from the following Knowledge Base articles
After you install the updated version of Jet, you will only be able to use the Text IISAM to update text files with the following extensions:
Installing Microsoft Data Access Components MDAC 2.1.2.4202.3 (GA) and the
Microsoft Jet 4.0 SP3 update adds the following registry key when a program loads the Text IISAM.
HKEY_LOCAL_MACHINE\Software\Microsoft\Jet\4.0\Engines\Text\DisabledExtensions
The Value data for the registry key is:
!txt,csv,tab,asc,htm,html
NOTE: The first release of Jet 4.0 SP3 did not provide the use of an exclamation mark (!). When you place an exclamation mark at the beginning of the Value data, you can modify only files with the extensions listed. When you do not place an exclamation mark at the beginning of the Value data, you cannot modify files with the extension listed. With the Jet 4.0 Text IISAM, you cannot set the registry key to an empty string. Therefore, if you do not want to block access to any system text files, you should set the registry key to a binary file name extension. For example, you can use .exe.
To resolve the error, either rename the file extension to one of the enabled extension types or modify the DisabledExtensions registry key using the methods in this article.
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