AiO Patch is currently at 2.117. Since you've installed the game manually by extracting files from installer, I should mention that the only plausible reason for game's installer not working (besides possible disc damage due to age and other factors) is having a badly written program running in the background. The old InstallShield installer is used to install the game. It has the quirk that it broadcasts specific message to all windows on the system and doesn't proceed until all programs have responded to the message. The message doesn't have any meaning to most programs, but they must all respond to it, otherwise the installer will freeze indefinitely. If that's the case, it means you have something bad running in the background and should at least terminate it to let installer run.
Windows 8 and newer's Task Manager have a "Analyze wait chain" option you get by right-clicking installer's setup.exe on Details tab. It tells which process is blocking the installer. If that's actually the case, you've got a problem. After all, most crapware is written for Windows. For older Windows versions, Process Hacker can be used to find out what blocks installer. The procedure is a little different, after you double-click setup.exe, you need to go to Threads tab, then right-click on threads in the list and select Analyze->Wait to pinpoint problematic process. Just for informational purposes.
Regarding the problem at hand, you can definitely try and see if the issue re-occurs if you launch the game in developer mode and start playing Wartok Canyons level from scratch using New Game option. You'll need cheats to arm Rynn and Arokh. Also, Surreal's games in general are known to have issues if they run too fast. I've put a frame-limiter in the latest AiO Patch to avoid some of the oddities.
Also, which Gold Pack have you downloaded? This version
is fully patched. Definitely try it and see if you encounter any issues with it. The added levels are good addition, though for single-player stuff, you've got to search folder for readme files to see which is the starting level for certain campaigns that span multiple levels and to learn a backstory, if any. Also because level list after clicking New Game is a mess when you got every level in place.
It'd be nice if it was possible to distinguish single-player levels from multi-player levels.
My guess for the looping cutscene problem would be that maybe something goes wrong when reading game data from disk, making the engine not realize the cutscene has finished and therefore breaking out of the playback loop. Same could be said for crash on level transition. It can also happen that the game corrupts save game, which could be verified that this isn't the case by starting Wartok Canyons again from New Game while in developer mode. Though the only savegame issue I remember being able to reproduce consistently in the past myself was on Islands level. In the Goblin base, saving the game while the trap with poison gas was hissing then reloading it would result in extremely low frame-rate, probably due to some garbage data ending up in the saved file. It's good to have multiple saves from various points in the game for cases like this.
I've mentioned somewhere else that the savegames from version 445 and any AiO Patch version are compatible since there haven't been any changes to the savegame format, so it's safe to assume that savegame compatibility is not an issue here. Official patch version 445 ReadMe documents the crash that would occur in such case when attempting to load incompatible save.