When you have just completed an orbital research mission and then accept a new one and do a new launch you are unable to start the experiments.

Steps to reproduce:

1. Accept an orbital research mission, complete it, and de-orbit the craft.
2. Return to space center, go to mission control and accept new orbital research mission.
3. Go to VAB, the same ship should still be loaded there.
4. Launch your ship and once in orbit right click the part and start the scan.

Result:
A message saying the scan can't be started because the craft has already fulfilled a mission. Expected result is to start the scan.

This happens even if you change the parts or the name of the vessel in step 3 or if you rebuild the vessel from scratch using the New button.

System info
KSP 0.25 (x86) on Windows 7 PE (x64)

Mods
000_Toolbar
Chatterer
CommunityResourcePack
Diazo
EditorExtensions
FerramAerospaceResearch
Firespitter
KAS
KerbalEngineer
KSP-AVC
MissionControllerEC
ModuleManager.2.5.1.dll
NASAmission
ORSX
PartCatalog
PreciseNode
ProceduralFairings
RCSBuildAid
RealChute
RemoteTech
SCANsat
SelectRoot
Squad
TextureReplacer
toolbar-settings.dat
UmbraSpaceIndustries
UniversalStorage

You can find my save file here: http://pastebin.com/d5KunhyR

Thanks for this info, I have fixed this for the next version of mission controller.

For now you should be able to do another mission when KSP is reloaded, or playing another session.

Cool! I think your mod is great, thank you for sharing it with us. 👍