Yep I forgot about that, it's an optional ending (or rather it will be, I didn't write it yet). There's gonna be a fix in the next version, but I don't want to upload another one without additional content. There's nothing after that jump it's just the end so don't worry, you didn't miss anything.
You can increase the pressure you put on the Fremen and Smugglers to increase Spice income, and then wait for a client's gauge to reach 99, then sell en mass to yield more gold. But maybe I'll decrease the required sum.
The bug you encountered doesn't happen on my end, I'm trying to reproduce it, it will be fixed asap.
