Due to MOStlyCE 3 being a major release, it is important to carefully follow the following steps to ensure your upgrade goes smoothly.

While we refer to a change from MOStlyCE 2.x to MOStlyCE 3 as an upgrade, it requires you to completely remove your old version of MOStlyCE before installing the latest version. This is not an upgrade that just overwrites files!

MOStlyCE 3 is an important upgrade as it fixes some serious security issues. Version 2.x of MOStlyCE is now deprecated and version 3 is now recommended for all Mambo 4.6+ users. We encourage you to upgrade to take advantage of the latest developments and increased security.
(See the announcement here: http://forum.mambo-foundation.org/sh...ad.php?t=10157)

The basic steps to change to MOStlyCE 3 are as follows:
1) backup your site
2) uninstall the MOStlyCE Admin component
3) uninstall the MOStlyCE mambot
4) open your file manager and make sure the following files and directories are not present and if the are then remove them manually:

• administrator /components /com_mostlyce
• mambots/editors/mostlyce
• mambots/editors/mostlyce.xml
• mambots/editors/mostlyce.php
• components/com_mostlyce_frontend

Once those have been removed proceed with the v3 install. If you uninstalled MOStlyCE and those still live on then you are likely to experience file permissions issues (for eg. the owner of the files is not the same as the user Mambo is using to try and install the new files (i.e.) johnsmith cannot remove or overwrite files owned by nobody, apache, etc.)

After installing v3 of MOStlyCE load up the editor and click on the blue help (question mark) button on the editor to confirm what version it is loading. If it doesn't say v3.x and instead says 2.x then the installation was not successful. As always make sure to clear your cache too.

More information can be found on our docs site here: http://docs.mambo-foundation.org/en/...ry&EntryID=116

MOStlyCE can be downloaded from its project page on the forge: http://mambo-code.org/gf/project/mostlyce/