Vincesportsman2

I have done that, but It still refuses to work...

Well I don't really know how to install this plugin correctly then, is there a tutorial somewhere?

I have re-installed mechjeb and the problem remains the same someone please help!

Can someone help me with this problem?

Can someone help me with this problem?

I am having problems with mechjeb 1.9.3 on version .17 of KSP. When I go to my assembly building it says this part is not available in this version of KSP. I have installed the enitre package including parts and plugin and it won't work, not even mechjeb that I put on some of my rockets in 1.9.1 version .16 of KSP old will work please help.