Crash of latest SVN

[Nigel Titley]

Latest SVN, built under Ubuntu Feisty, after a make clean and into a new 
install tree gives me


Backtrace:
In unknown file:
    ?: 0* [primitive-load-path "business-prefs.scm"]
In /opt/gnucash/share/gnucash/scm/business-prefs.scm:
   86: 1* [gnc-register-kvp-option-generator # #<procedure 
book-options-generator #>]

/opt/gnucash/share/gnucash/scm/business-prefs.scm:86:1: In procedure 
gnc-register-kvp-option-generator in expression 
(gnc-register-kvp-option-generator QOF-ID-BOOK-SCM book-options-generator):
/opt/gnucash/share/gnucash/scm/business-prefs.scm:86:1: Wrong type 
argument in position 1: #<collectable-swig-pointer QofIdType * 84a8bf8>

followed by a termination

Any thoughts anyone?

Nigel