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HTMLArea is not working on some sites after upgrading to 4.1. I followed instructions from corresponding bug report but without success. It works on some sites and does not work on others. All sites share the same core package though symbolic links but behave differently.
For example, HTMLArea does not work for this site. I installed TinyRTE instead. Actually, it is better than HTMLArea, so I am not really complaining...
If you have RTE HTMLArea (extension key: rtehtmlarea) installed as a local or global extension you'll run in trouble when updating to Typo 4.1. The new version 4.1 brings RTE HTMLArea Version 1.5.1dev as a sytem extension and part of the upgrade, while the TER stills shows version 1.4.3 as latest.
This very version wont work in my installations with Typo3 V4.1, so i had to update to above mentioned 1.5.1 developer version and the editor is working fine again. Alternatively one can deinstall the local or global extension, so the build in system extension will be used.
rtehtmlarea is fine with me. we are developing htmlarea further and some nice features are coming for 4.2 like: word count, character count, accessiblity icons before or after, dl's, linking to anchors.
gRTz
ben