Greetings GOG Community,
This is my first post ever on the forums, so I wanted to make sure I was able to contribute as much useful information as possible. Currently running Windows 7 Home Premium 64-bit Edition on an AMD Phenom(tm) II X4 945 quad-core machine with 2 GB of DDR3 RAM. My video card is a dated Nvidia GeForce 9600 GT with the latest drivers installed. Funny story about how I solved my cutscene issue: After repeated visits to this thread and trying every possible solution mentioned, I finally resigned to just Alt+Tabbing my way through the game after each campaign video had finished playing. One night when I concluded my weekly virus scan, I fired up NWN to start a new original campaign. Imagine how overjoyed I was when not only the cutscene played like normal (the cursor phased out of view instead of staying onscreen), but the game resumed after the video had finished playing.
After exiting the game, I right-clicked the "Computer" icon on my desktop and left-clicked the "Properties" option in the prompt. I discovered that I had forgotten to turn System Protection back on after turning it off temporarily just before conducting the virus scan on my machine. I was able to both re-create and resolve the same issue by turning System Protection back on, allowing Windows to create restore points and shadow copies of itself over time, running NWN, playing the campaign movies with the issue this time, exiting, turning off System Protection, running NWN again, and finally watching the campaign movies/cutscenes without the issue. For those of you still having trouble playing the movies, there is still hope.
Note that since implementing this potential solution, I am no longer running the game using compatibility mode and I have enabled Desktop Composition for NWMain.exe. Also note that my copy of Neverwinter Nights is not the GOG copy, but the retail copy that was originally released in 2002. Bought NWN Vanilla from Sam's Club, and both SoU and HotU from Electronics Boutique/EB Games. My game is patched only to version 1.67, as I firmly believe 1.68 royally FUBAR'ed the way certain combat feats behave and 1.69 failed to properly restore them. Hope this helps, and happy gaming to all. Please pardon the preceding wall of text. Thank you.
Post edited May 14, 2014 by Prince_Raymond