modify_mass module error about reboundx

[dtamayo]

I just tried your code and it works fine with the latest version. Try upgrading to the latest version of REBOUND and REBOUNDx

[MilevaE]

Thanks for your fast answer! I can't upgrade REBOUND and REBOUNDX. The problem is that my operative system is ubuntu 12.04, and I should upgrade first this, but if I do I will loss all my licenses, and current configuration =(
Bad news for me

Thanks anyway!

Cheers,

Mileva

[hannorein]

Hi Mileva. I typically install python packages in a virtualenv. That way I can easily upgrade them without risking to destroy my system wide python installation. It's pretty straightforward (google can tell you more):

virtualenv venv
source venv/bin/activate
pip install rebound reboundx

[MilevaE]

Very useful tip! Thanks Hanno!