Visual Prolog Technical Support
How to Download the Visual Prolog 5.1 Patch
If you are a registered user of Visual Prolog 5.0, you can follow these
instructions to update to Visual Prolog 5.1 version (build
565).
The update is free for all registered users - just install the new version on
the top of the old registered version.
Patch Description
The main purpose of Visual Prolog 5.1 is to fix
various bugs reported from the 5.0
and 5.02 versions, but it does also
include new features.
The full version of Visual Prolog 5.1 is available only
as a new Visual Prolog 5.1 CD that you can
order from our sales department.
However, we provide the possibility to update the following directories
via patch:
 | BIN |
 | ESTA |
 | INCLUDE |
 | LIB |
 | DOC_TOOL |
 | VPI\LIB |
 | VPI\INCLUDE |
 | SOCKBIND |
 | SQLBIND |
 | ODBCBIND |
Note, please, that the patch does not upgrade examples from the following
directories:
 | DOC_TOOL |
 | SOCKBIND |
 | SQLBIND |
 | ODBCBIND |
Please, read Upgrade notes
Installation
Instructions
To download the patch:
- Visual Prolog 5.1 patch should be applied to the base version of Visual
Prolog 5.0 only.
If you have already applied patches to the versions 5.01 and 5.02, you need
to restore Visual Prolog 5.0 from your distribution CD. We recommend you to
make maximal installation.
- From the Download table choose:
 | What version are you going to upgrade (1st Step or Professional)? |
 | What way of downloading to use: via your browser or by FTP? |
 | From what location to download a patch file via your browser: Europe or
USA? |
- Click on the filename in the table.
- The download program will ask you for a destination
directory. You should install to the same directory as the registered
version. Please, specify the root Visual Prolog directory as a target.
Check that this directory has no read-only attribute.
- Run a downloaded file that is a self-extracting executable. It will unpack
itself and delete work files.
- Remove all the directories that are not
relevant to you if you wish.
- Please, read the Remarks if :
 | you have changed some source files of the previous version (e.g.
examples); |
 | you have chosen an installation different from maximal while
Visual Prolog 5.0 installation. |
- Please, read "Frequently
Asked Questions about Downloading Patches" if you have problems in
downloading and applying a patch.
Please, download:
Remarks
- The patch would not be applied to the files that have been changed by a
user (e. g. examples).
In the list "Results of Application of Patch File"
the following message will appear: Old Files Invalid...
Workaround: If you want to upgrade these files, please,
restore them from the Visual Prolog CD, apply a patch, and then insert your
changes if necessary.
- If while Visual Prolog 5.0 installation, you have chosen an installation different
from maximal, then:
- The file Patch.ERR would be produced even if there were no errors.
- In the list "Results of Application of Patch File"
the following message can appear:
Old Files Invalid..
Do not pay attention to this message if you have not changed
the source files of the previous version (see item 1 of Remarks).
- A patch program would create new directories to locate files that have
been added in the last version .
You can delete unnecessary directories after downloading.
- In some cases it takes a long time and consumes a large amount of memory
to skip uninstalled files. The system can be hanged-up.
The workaround is to do a
full installation of the version 5.0, apply the patches, and
then to remove all the directories that are not relevant to you.
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