I've been trying to identify this movie for some time now. I watched it at home in VHS before 1990.
- It was about a spaceship attacked by an alien.
- The alien attacked and killed several crew members, by covering them completely with whitish/translucent tentacles.
- The tentacles would start coming up for instance from a floor made up of metal bars.
- At the end of the movie, the alien befriends the last crew members.
- There was a scene in which the alien held some type of wrench, helping the crew fix the ship.
That's all I remember. The closest I've found is Star Crystal, but after watching it I don't think it is the same movie... As I remember it, the tentacles were the only form of the alien's body.