The dead button bar problem is a famous problem.
Read the FAQ for lots and lots of fixes.
The quickest one is:
It has been found out by a 2 year old (sic!) that you
can "emulate" the Sheet button with the key
combination of "up cursor, down cursor and Esc".
Yes, it seems strange but it works! This will
either put you into an open Sheet file or bring
you to the Sheet icon on the System screen. To go
directly to the Sheet icon each time, press the
Psion key at the same time as the above
Another such key combination has been reported
by Timothy Giles: "up cursor, p key and Esc"
will emulate the Calc button. Apparently, there is
a pattern and this key sequence was found by
studying the keyboard values of keys...
See this link for more info:
----------------------+ www: http://wol.ra.phy.cam.ac.uk/mackay/
Cavendish Laboratory, | tel: 01223-339852 fax: 354599 home: 740511
Madingley Road, | international code: +44-1223
Cambridge CB3 0HE. UK.| home: 19 Thornton Road, Girton, Camb. CB3 0NP