Saturday, April 25, 2009

Joomla 1.5's Fatal error: Cannot instantiate non-existent class: jinstallationmodel in ../installation/installer/controller.php on line 161

Someone asked me about this error encountered during his Joomla 1.5 installation:

Fatal error: Cannot instantiate non-existent class: jinstallationmodel in ../installation/installer/controller.php on line 161

Download and install the latest stable updates and patches that should come with the corresponding installer used.

Check latest Joomla stable patch/update releases here:

http://joomlacode.org/gf/project/joomla/frs/?action=FrsReleaseView&release_id=9911

What these patches basically do is to provide updated necessary Joomla files (and folders) which one can upload/save replacing previous default Joomla files and folders.

Patches normally come in zipped/compressed files, extract them first for uploading/saving.

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