Wrong or poorly worded message.
Reported
When adding a wheel i get message "piston head already exists"
When trying to complete a contract from the character's inventory i get a "selected ship" does not contain items.
Could you please rename the messages to be more appropriate. A wheel is not a piston head and a player is not a ship.
I have the same bug 
Hello engineer,
Thank you for reaching out to our forum. Regarding the first issue with the "piston head already exists" message, we are aware of this issue and have already reported it here;
https://support.keenswh.com/spaceengineers/pc/topic/41914-piston-head-already-exists-displays-when-trying-to-add-a-wheel-with-one-already-there
As for the second issue with the "selected ship," we have been able to reproduce it on our end and have created an internal ticket for it.
Kind Regards,
Keen Software House: QA Department
Hello engineer,
Thank you for reaching out to our forum. Regarding the first issue with the "piston head already exists" message, we are aware of this issue and have already reported it here;
https://support.keenswh.com/spaceengineers/pc/topic/41914-piston-head-already-exists-displays-when-trying-to-add-a-wheel-with-one-already-there
As for the second issue with the "selected ship," we have been able to reproduce it on our end and have created an internal ticket for it.
Kind Regards,
Keen Software House: QA Department
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