[TYPO3-install] Fatal Error problems (extension key "sv" not loaded)

[Tor de Vries]

Hello all... I am trying to install Typo3 v4.1.2 (with dummy site)  
onto my server.  I've copied up the files and chmod'd the directories/ 
files to 755 as directed in the installation file (I used FTP to  
chmod because I don't have CLI access on this host).  Unfortunately I  
keep getting this error:

TYPO3 Fatal Error: Extension key "sv" was NOT loaded!  
(t3lib_extMgm::extPath)

I have searched online for examples of this specific error.  Google  
shows it mentioned on various non-English sites in reference to  
v3.8.0, but not v4 (and Google's attempts at translating German,  
French, or Austrian are pretty lousy).  It's also mentioned in bug  
http://bugs.typo3.org/view.php?id=3365 but appears to be unresolved,  
and none of the suggestions listed there have made a difference.  The  
search function on this mailing list's web site doesn't return  
anything useful, nor did a manual comb through the last year's worth  
of posts.

Typo3 v3.8.x worked fine on this server previously (as recently as  
two days ago).  This v4 install is not an upgrade, however, nor is it  
being installed as an overwrite of the old version; this is being  
installed as a fresh copy in a new directory.

Any suggestions?  I can't even get an installation page, or anything  
else.  Just this error.

Thanks in advance.



- tdv