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Originally Posted by Mr. G
Sergey, in the very first sentence of the 441 to 444 Upgrade Notes, it says, "If any hot fix was applied to X-Cart, it is recommended to uninstall this hot fix to reduce the possibility of an unsuccessful upgrade." Please clarify what a hotfix is. Is a hotfix a patch? QT has applied the patches as listed in the attached doc. I have made changes as listed there. Do I need to uninstall/revert each of these before doing the upgrade?
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Hot fix is a patch. Patch incorporates some changes to files. So, generally applying a patch (hot-fix) means making changes to X-Cart source files.
If you have any changes applied to X-Cart source files (for example to cart.php), the upgrade routine may trigger "Could not patch" error on the changed files. In this case, you have to install some patches (for example cart.php.diff) from the upgrade package manually; alternatively, you can restore the original source files, upgrade your cart, then re-implement your custom changes on the upgraded source files (if necessary).
Feel free to contact our support team should you require any assistance on upgrading your X-Cart.
See also:
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http://help.qtmsoft.com/index.php?title=X-Cart:To_apply_a_patch_manually#What_is_diff_.28pat ch.29_file.3F
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http://help.qtmsoft.com/index.php?title=X-Cart:Upgrading
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Originally Posted by Mr. G
Also, assuming that my 3rd party modules (shown below) are 4.4.4 compatible, do they still need to be uninstalled before the upgrade?
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Basically, they need not.
However, if 3rd party modules installed in your cart change any X-Cart source files, you may get "Could not patch" error on the files being patched by the upgrade routine.
In this case, you may need to follow the scenario suggested above: restore the original source files that triggered the "Could not patch" error, upgrade your cart, then re-implement the necessary custom changes on the upgraded source files.