Hello, since installing CPLEX 12.3 I get an assert assert(curparam.intparval[i] == par.intparval[i]); at line 455 in lpi_cpx.c where i = 1 and so curparam.intparval[i] = 2100000000 and par.intparval[i] = 2147483647 Does anyone else have this problem? Cheers, Sebastian