Two Problems

[Thorkil Wolvendans]

Hello everyone!
I'm having two problems with Lilypond 1.6.11 (couldn't get 1.8 started 
yet!) for which I couldn't find a answer in the manual:
(please compile VM01.ly to see the problem)

1) From measure 49 to 52 (page 2), I want a slur to go from <bes2 bes'> to 
<a2.>. Because there's a second voice involved, I can't create that slur. 
How can I get Lilypond to place that slur? NB: I don't want to tie one 
voice to another!
2) In measure 92 (page 3) something very strange is going on: a normal 
barline followed by a new key signature and a double barline. As far as I 
can see, this is not what I've typed. What's wrong?

There's probably a simple solution, but I couldn't find it in the manual. 
Can someone help me out?

Cheers!
Thorkil

VM01.ly
Description: Text document