id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
2537	Differentiation of homotopy	Adrian Pop	Willi Braun	"See the attached model.
{{{
loadFile(""cis.mo""); getErrorString();
simulate(ThermoPower.Examples.CISE.CISESim120501); getErrorString();
}}}
gives:
{{{
[c:\\bin\\cygwin\\home\\adrpo\\dev\\OpenModelicaNoChanges\\build\\bin\\b\\ThermoPower\\cis.mo:1631:7-1631:195:writable] Error: Internal error 
Differentiate.differentiateEquationTime failed for Plant.Downcomer.h[1] = homotopy(Plant.Drum.afd * Plant.Drum.hf + (1.0 - Plant.Drum.afd) * Plant.Drum.hl, Plant.Drum.afd * Plant.Drum.hf + (1.0 - Plant.Drum.afd) * Plant.Drum.hl)


Error: Internal error - IndexReduction.pantelidesIndexReduction1 failed! Use +d=bltdump to get more information.
Error: Internal error - IndexReduction.pantelidesIndexReduction failed!
Error: Internal error Transformation Module PFPlusExt index Reduction Method Pantelides failed!
}}}
"	defect	closed	high	1.9.2	Backend	trunk	fixed		Francesco Casella Lennart Ochel