See http://feedback.textasticapp.com/topic/158682-ability-to-open-a-folder-switch-between-files-using-a-hierarchical-file-browser/

Hello, it should happen instantly. Do you have the Dropbox app installed? Did it open the Dropbox app immediately? Which part takes so long?

I don't know if it's too much to ask, but since I can't seem to reproduce it so far, it would help immensely if I could see how exactly you are using the app when it happens. So, if you happen to have a video/screen recording of the bug, that would be great.

Could you send me the files to support@textasticapp.com? Can you currently reproduce it with a different index.html file?

I've tried to do what you wrote about ten times now. It didn't happen on my device.

Which iPad model and iOS version are you using?

Does it happen every time?

Sorry, but I'm using too many new APIs that were introduced in 10.7/Lion.

Good point. I'll see what I can do.