This crash is a limitation in the Fallout engine that can't be fixed easily. It shouldn't be necessary for Fallout 2, as modders have fixed it. Hopefully this thread will be helpful for those in the future who Google this after getting a crash after trying "assassination" or other such activities with TNT or Plastic Explosives. It's possible to do it without a crash.
1) First, see if you can kill them with one blast, and stay on the map when the blast goes off. That should avoid this whole issue.
2) If you get attacked by whomever the explosives damaged after it detonates, try again because you're going to get a crash. If combat didn't engage, you're good.
3) IMPORTANT NOTE: With either of the options below, once you return to the map you must enter a combat round (press "A") and then end the combat round (press "Enter") so that the engine can clear combat variables. This is why the crashes happen to begin with; uncleared combat variables related to the explosion damage.
4) Option 1, FALLOUT FIXT ONLY: Set timer for the explosives from your active hand. This means inventory is closed. When you click the explosives and set the timer, it'll drop to your feet automatically. Leave the map before the explosives detonate. (See #6 for a note about leaving the map)
5) Option 2: Set timer from inventory but DO NOT DROP the explosives. Exit inventory, then plant the explosives on your target using Steal. Leave the map before the explosives detonate. (See #6 for a note about leaving the map)
6) Leaving the map before the explosives detonate isn't without its downsides. The script flags might not trigger when leaving the map this way, meaning the game might not register these people as actually dead, for the purposes of quests and such.
I hope this helps in your quest to kill people like a cheap bastard.
1) First, see if you can kill them with one blast, and stay on the map when the blast goes off. That should avoid this whole issue.
2) If you get attacked by whomever the explosives damaged after it detonates, try again because you're going to get a crash. If combat didn't engage, you're good.
3) IMPORTANT NOTE: With either of the options below, once you return to the map you must enter a combat round (press "A") and then end the combat round (press "Enter") so that the engine can clear combat variables. This is why the crashes happen to begin with; uncleared combat variables related to the explosion damage.
4) Option 1, FALLOUT FIXT ONLY: Set timer for the explosives from your active hand. This means inventory is closed. When you click the explosives and set the timer, it'll drop to your feet automatically. Leave the map before the explosives detonate. (See #6 for a note about leaving the map)
5) Option 2: Set timer from inventory but DO NOT DROP the explosives. Exit inventory, then plant the explosives on your target using Steal. Leave the map before the explosives detonate. (See #6 for a note about leaving the map)
6) Leaving the map before the explosives detonate isn't without its downsides. The script flags might not trigger when leaving the map this way, meaning the game might not register these people as actually dead, for the purposes of quests and such.
I hope this helps in your quest to kill people like a cheap bastard.

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