Re: iOS 9 jailbreak. Some apps crash on start when installed. Help!
If it works in no substrate mode then it's definitely a tweak.
So you must not have wiped everything.
So let's do troubleshooting 101. I haven't made this post since sbsettings was a thing…
First you need iCleaner pro.
Then you need to open it and hit the "+" on the bottom left.
Then hit the bar for Cydia substrate addons
At that point you will see all your Cydia tweaks with a handy slider to "turn them off"
So here's the best practice for this. Turn off everything in the top 50% of your list. (If you have 100 tweaks turn off the top 50, if you have 10 tweaks turn off the first 5, etc…)
At this point respring and see if apps work.
If they do, then you know the problem is in that first set you turned off, if it doesn't work still, go ahead and disable the rest of the tweaks.
Respring and confirm that apps work. At this point go ahead and turn back on the top 50% again. Respring and confirm that apps now work. Now you will know positively which "50%" of that list tow work in.
At this point take your 50% list and break that into equal parts. Repeat as above, turn off half those tweaks respring and test, continue this pattern until you have bored down to the tweak that is causing the apps not to load.
Keep in mind, while this will make it so your apps work again, it doesn't mean the tweak is broken, or won't work on your os, just that it is conflicting with your current setup.
Example, tweak a night work perfect, and tweak b might work perfect, but when you have tweak a and tweak b installed at the same time, your apps don't open. Removing tweak a results in your apps working again. However if you go an install tweak a again, and remove tweak b, it also results in your apps opening again.
Both tweaks work individually, together they cause issues.
OP, take this knowledge and go forth! You shall solve your own problem! YOU CAN DO IT!
Please report back with the results