As per the upstream bug report, this issue has been fixed. I no longer get the error message when installing freecad 0.14.3702+dfsg-1 on Ubuntu 14.10. Therefore I am closing this as Fixed Released.
If you need a fix for the bug in previous versions of Ubuntu, please look into the SRU Procedure [1] to bring the need to a developer's attention. Though, SRUs are mainly for small/easy patches which need to be applied to older releases, and I don't know how easy it is to apply the fix in Simulation.py.
As per the upstream bug report, this issue has been fixed. I no longer get the error message when installing freecad 0.14.3702+dfsg-1 on Ubuntu 14.10. Therefore I am closing this as Fixed Released.
If you need a fix for the bug in previous versions of Ubuntu, please look into the SRU Procedure [1] to bring the need to a developer's attention. Though, SRUs are mainly for small/easy patches which need to be applied to older releases, and I don't know how easy it is to apply the fix in Simulation.py.
[1]: https:/ /wiki.ubuntu. com/StableRelea seUpdates# Procedure