Comment 1 for bug 1663599

Indeed Dr.Geo does not work on Pharo5, in fact loading DrGeo crashed the whole Pharo system.
I guess it is due to API changes in Pharo5.

Work is needed to make it works on Pharo5 but there are problem like ever growing image size and probably other issues which will make Dr. Geo unstable and very likely Dr. Geo users very unhappy.
Therefore, the efforts to port DrGeo to Pharo5 and to still get a reliable DrGeo can be quite important.

If you are an experienced Pharo user, you may want to give a try to port DrGeo and report your inquires in the Dr. Geo forum.

Thanks for your interest to Dr. Geo.