TYPO3 Core

Hi, I'm a TYPO3 newbie. I just installed it and everything seems to be functioning well, bu I cannot get RTE to load. Like many users have reported, the only thing I'm getting is the following message: The editor is being loaded. Please wait...

I have read pretty much all of the other reports about this issue and nothing seems to help. I'm having this issue in all the latest versions of all major web browsers: IE, FF, Opera, Chrome, Safari on a desktop running XP. My web server is running Linux with Apache 2.2.14.

I've enabled troubleshooting mode and have disabled compressed scripts for the extension. No errors show up in the browser. But Firefox's error console reports: Error: setRTEsizeByJS is not defined
Source File: http://www.mysite.com/typo3/wizard_rte.php?&P[table]=tt_content&P[uid]=5&P[pid]=7&P[field]=bodytext&P[returnUrl]=%2Ftypo3%2Fsysext%2Fcms%2Flayout%2Fdb_layout.php%3Fid%3D7 Line: 290

After attempting to run the extension, my server error log states:

[Thu Mar 18 09:59:49 2010] [crit] [client my IP address] (13)Permission denied: /home/user/public_html/mysite.com/typo3temp/.htaccess pcfg_openfile: unable to check htaccess file, ensure it is readable, referer: http://www.mysite.com/typo3/wizard_rte.php?&P[table]=tt_content&P[uid]=5&P[pid]=7&P[field]=bodytext&P[returnUrl]=%2Ftypo3%2Fsysext%2Fcms%2Flayout%2Fdb_layout.php%3Fid%3D7

I installed a local version of the extension. No help. Uninstalled that and system extension took over. But now the extension manager reports that "A difference between the originally installed version and the current one was detected!" The details are:

Modified files:
ChangeLog
class.tx_rtehtmlarea_base.php
extensions/InlineElements/class.tx_rtehtmlarea_inlineelements.php
htmlarea/htmlarea-gecko.js
htmlarea/htmlarea-ie.js
htmlarea/htmlarea.js
htmlarea/plugins/BlockElements/block-elements.js
htmlarea/plugins/TYPO3Link/typo3link.js
htmlarea/plugins/TableOperations/table-operations.js
mod3/class.tx_rtehtmlarea_browse_links.php"

I've followed the advice given in previous bug reports about deleting caches, temp files, and all the rest. Nothing has helped. Please help!

(issue imported from #M13859)