I installed MechJeb 2 via CKAN and when I tried the mod out everything worked at first. I then went on to do an Apollo style munar landing.
The first thing that didn't work was the Ascent Guidance. My orbit should be at 100km and the craft flew until the apoapsis was at 100km and then waited till it is at the apoapsis to start a prograde burn to get the periapsis up. However, the craft never burns prograde at the apoapsis. It does nothing and will crash into Kerbin. The second thing is when I try to make and let MEchJeb execute a manouver node to get to the mun, MechJeb sets the manouver node but doesn't execute it (I clicked execute). When I'm in the SOI of the Mun I can make a note and execute it to get the periapsis and apoapsis up. This time it works. The docking works. Then I undock the lander and click on Landing Guidance and pick a landing spot. Now MechJeb does absoulutely nothing. I tried all of the above multiple times and I have the same issues over and over again.
Edit: I tried the Mun landing with the stock Accapello (I think that's the name. It's from the Making History DLC) rocket and these problems occured. I then tried a Mun landing with the stock PT Series Munsplorer and everything worked fine with MechJeb. Maybe this helps
Can someone help me with this problem?