DAP seems stuck in a loop while compiling SBS programs

Hello,
Thanks for creating DAP.  It looks very promsing and I look forward to using
it as an alternative to SAS (which I have used previously).  I have
installed DAP 3.7 on Ubuntu (Debian) Linux.

I have tried running some of the SBS samples in the examples directory.  

In the EMACS 'Async Shell Command' buffer I seem to get the following:
Compile and run? [y/q] y
Preprocessing...
Compiling...
Executing...
Compile and run? [y/q] y
Preprocessing...
Compiling...
Executing...
Compile and run? [y/q] y
Preprocessing...
Compiling...
Executing...
Compile and run? [y/q] y
Preprocessing...
Compiling...
Executing...
Compile and run? [y/q] y

ie the compiling appears to be stuck in an endless loop, it never escapes
from compiling.

Could this be an Environment issue or my compiler?  I have the GNU C
compiler installed.

Any suggestions would be most appreciated. 

Thanks and best regards,

Brian Sieben, Graduate Student
Simon Fraser University, Dept. of Geography
Burnaby, BC, Canada, V5A 1S6