id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
1230	TwoTanks model fails to build	Per Östlund	Per Östlund	"The attached TwoTanks model gives a lot of these messages:
{{{
-differentiate_equation_time on algorithm not impl yet.
-differentiate_equation_time failed
-differentiate_eqns failed
eqns =179, 178, 177, 176, 175, 174, 173, 172, 171, 170, 169, 168, 167, 166, 165, 164, 163, 162, 161, 160, 159, 158, 157
}}}
and ends with a ""Error: Model is structurally singular, error found sorting equations"" before printing a lot of debug output."	defect	closed	high				fixed		Per Östlund AlexeyLebedev