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1. Tools menu (http://jira.secondlife.com/browse/VWR-6328)
menu_viewer.xml for your language (xui/en-us folder for English)
line 618: <menu bottom="-18" drop_shadow="true" enabled="true" height="510" visible="false"
line 619: label="Tools" left="0" mouse_opaque="false" name="Tools"
Change "false" to "true" for visible
Change "Tools" to something else ("Tool" works) for *name* (leave label alone since that's what you actually see)
You'll get some nonsensical menu options ("Take copy" is always enabled even when nothing is selected), but that shouldn't confuse anyone who wants it back, and everything else seems to work just fine.
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2. Some RC settings don't persist properly (http://jira.secondlife.com/browse/VWR-6298)
(folder you installed SL into)\app_settings\settings_files.xml
Change:
<key>Global</key>
<string>settings.xml</string>
to:
<key>Global</key>
<string>settings_releasecandidate.xml</string>
Rename (folder you installed SL into)\app_settings\settings.xml to settings_releasecandidate.xml.
The viewer will now properly save/load all global settings (chat settings are per-account, see below).
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3. Chat logging settings don't persist (http://jira.secondlife.com/browse/VWR-6265)
1) Log on to SL with the RC
2) Advanced / Debug Settings...
3) Type: UserSettingsFile
4) Change the settings.xml at the end to settings_per_account.xml
5) Edit / Preferences, IM tab
6) Check/uncheck whatever settings you want
7) Close SL (if you crash, it won't save settings so do close right after changing them)
Done (Note: if you want to change them, you'll have to go through the steps once more and since it's per account, you'll have to do it for each alt)
(Caution note: once LL fixes the bug you *have* to get rid of settings_per_account.xml before installing a new RC or it could cause the same bug we have now and it's very unlikely anyone would guess you put that file there. If you think you'll forget, do not try it, the annoyance now isn't worth the potential headaches later
)