[ODE] LCP internal error, s <= 0

[Marco Grubert]

Hello,

Despite not having made any major code changes in the past 6 months I am now 
suddenly encountering lots of s<=0 error messages that have never occured in 
the past years.
The LCP solver algorithm is beyond me and I am not sure what is causing this 
issue. Could anyone suggest some good points to check so that I can pin down 
the problem ?

Regards,
  Marco