I've been using MCreator 1.6.4 for 1.8 mods and every time I make any mod of any kind it crashes when I try to export. It doesn't say or do anything, it just crashes. I've been looking around the internet and have found other posts on it but nothing has really helped me fix it myself. It use to work awhile ago so I don't know why it is no longer working. I've tried uninstalling and reinstalling several times and have tried the Installer and Archive download. I have also tried both opening as and not opening as Administrator. I have also tried making a basic mod that only has the parts filled out needed to press the next button but MCreator still crashes.
Issue comments
I also tried this for 1.6.4
Try to open file user/preferences.conf inside MCreator's installation directory and add new line ui=legacy
Try to import the texture after you do this and it should fix the bug. Please report back if this worked so we can provide an official fix. Thanks!
As suggested in the other page and preferences.conf was blank when I opened it (opened with notepad) I put ui=legacy in anyways and it had no effect.
Also, not sure if this matters or not but in "https://mcreator.net/tracker/issue/40720" they're saying it's crashing when importing textures and I'm crashing when exporting mods.
dinosaur2_02: this would not be the case. I suggest you to check these tutorials to get a grip on MCreator: https://www.youtube.com/playlist?list=PLAeL-oIFIEngE6jRgFYeFMfuj8WQsO3Ei
MCreator 1.6.4 is outdated and not supported. Please update your MCreator.
Regarding the issue, this is a duplicate: https://mcreator.net/tracker/issue/40720