[TYPO3] Upgrade to 4.2.1 problems

[Tapio Markula]

Ralica Sotirova

> Hi, Daniel! Thanks for your reply.
> I don't know if the exstension can be responsible for that, without any
> errors in server log. Anyway I removed them all, exept:
> TYPO3_CONF_VARS['EXT']['extList'] =
> 'css_styled_content,tsconfig_help,context_help,
> extra_page_cm_options,impexp,sys_note,tstemplate,tstemplate_ceditor,
> tstemplate_info,tstemplate_objbrowser,tstemplate_analyzer,func_wizards,
> wizard_crpages,wizard_sortpages,lowlevel,install,belog,beuser,aboutmodules,s
> etup,taskcenter,
> info_pagetsconfig,viewpage,rtehtmlarea,t3skin";
> Nothing changes.

those are core extensions - should be compatible with used Typo3 version 
  and you can safely enable those.