Visible crew/equipment: At The End of the episode, when Kryten explains why the Cat would kill himself, a boom mic shadow can be seen moving across his face,. (00:24:55)
Visible crew/equipment: At The End of the episode when Lister makes his speech, the first shot shows a close-up of his face, then it shows a wide shot. A boom mic is pulled out of shot at the top of the screen. (00:25:50)
Visible crew/equipment: When the Red Dwarf crew are talking about who Legion is (after Lister has poured his bucksfizz), Kryten then says, "Could our very presence here have inadvertently awoken him?" As he says this, at the left side of the screen The End of a camera lens pulls away. (00:20:30)
Gunmen of the Apocalypse - S6-E3
Visible crew/equipment: At the start of the episode when Rimmer says they should surrender, a boom mic is visible at the top of the screen. (00:06:10)
Gunmen of the Apocalypse - S6-E3
Visible crew/equipment: Just after the simulant beams aboard and Lister and the Cat sit up from the table, a boom mic can be seen at the top of the screen. (00:07:40)
Gunmen of the Apocalypse - S6-E3
Visible crew/equipment: When the simulant has beamed on board Starbug, Lister and The Cat get up slowly from the table. Look closely, and you can see the shadow of a boom mic cast on Lister and The Cat. (00:07:50)
Gunmen of the Apocalypse - S6-E3
Visible crew/equipment: When sheriff Kryten asks for a drink, a boom mic can be seen at the top of the screen. (00:13:55)
Gunmen of the Apocalypse - S6-E3
Visible crew/equipment: After Rimmer is sick, as Lister comes to his rescue, a boom mic shadow can be seen on the wall behind them near the horns. (00:18:50)
Gunmen of the Apocalypse - S6-E3
Visible crew/equipment: When the crew's special skills get erased, a boom mic shadow can be seen on Lister. (00:24:20)
Emohawk - Polymorph II - S6-E4
Visible crew/equipment: When Lister says "Bony butts our move lets' just before they are fired at, a boom mic is visible to Rimmer's right. (00:06:40)
Emohawk - Polymorph II - S6-E4
Visible crew/equipment: When Starbug gets hit, as Rimmer says 'damage report' a boom mic can be seen on the right side of the screen. (00:07:25)
Emohawk - Polymorph II - S6-E4
Visible crew/equipment: When Rimmer says 'details halibut breath' a boom mic can be seen to Rimmer's left. (00:07:30)
Emohawk - Polymorph II - S6-E4
Visible crew/equipment: After the crash when Lister comes in from outside, as he says 'it's waist high out there', a boom mic can be seen at the top of the screen. (00:09:30)
Emohawk - Polymorph II - S6-E4
Visible crew/equipment: When Rimmer says the oxy-generation unit is destroyed, a boom mic shadow can be seen on the crate in front of him. (00:09:40)
Emohawk - Polymorph II - S6-E4
Visible crew/equipment: When Rimmer picks up the gun just after the Cat turns into Duane Dibley, a boom mic arm shadow can be seen moving past the crates, just as Rimmer turns his back on the camera. (00:20:50)
Emohawk - Polymorph II - S6-E4
Visible crew/equipment: Just after the grenade explodes, a boom mic shadow can be seen on Kryten's head. (00:27:00)
Suggested correction: Lister can only see M-Corp products and M-Corp employees. Cat is not an employee of JMC or M-Corp, so he disappears. Lister is the only member of the crew who is employed by M-Corp at this point.
Suggested correction: Cat was a descendant of the cat Lister brought aboard Red Dwarf. Would it be possible that the new owners might have stricter security controls, and Lister was sent to Stasis for a different reason?
Andy Benham ★
Inventing Deux ex machina explanations for a plot hole doesn't make it any less of a plot hole. M-Corp erases all of the Jupiter Mining Corporation's equipment, personnel and infrastructure from Lister's life. In no way is Cat a part of that. He has no connection at all to the Jupiter Mining Corporation, and until he meets him in Episode 1 no connection to Lister, either.
If M-Corp only erased JMC equipment from Lister's life, then Kryten, who belongs to DivaDroid and not the JMC, wouldn't have disappeared either. He disappears as he doesn't belong to M-Corp, not because he belongs to the JMC. Cat has no connection to M-Corp, as he wasn't a part of the JMC (as you pointed out), and is therefore erased for Lister.