--- FIXED ---
STEP 1 - Right click on avatar ... Go To Appearance ... Go To Hover Height ... Must be set to 0.000
STEP 2 - Right click on Avatar again ... Go To Apperance ... Go To Edit Shape ... Should give you a pop up window ... Click the Body Tab .... Scroll to the bottom ... Hover Height must be set to 50 (if you changed it from something other than 50) ... click the Save as Button at the Bottom.
STEP 3 - Go To Apperance TAB (at the right side of screen ) .... Should Give you a pop up window .... click on save (save outfit) at the bottom
STEP 4 - Quit your viewer (Quit the game) .... Open the Game back up .... You should now be able to sit on any chair and not fall through it.
SIDE NOTE: If you do not have the Apperance TAB (at the right side of the Screen) ... You can put one there by going to the Avatar TAB at the top of the screen .... Go to Toolbar Buttons ..... In the poped up window .... find the Apperance Button .... Drag it to the right - or - left side of the screen.
PS This is all using the Firestorm Viewer
P PS You may have to do this once every time you change to a new outfit
derk5482