I'll look into it. In previous iOS versions this wasn't possible, but maybe something changed there.

Hello, you can only select files from Dropbox, not folders. Selecting folders only works if the files in the providing app are stored locally - like in Working Copy.

To download entire folders into Textastic, you can use Textastic's built-in Dropbox support: https://www.textasticapp.com/v6/manual/lessons/How_do_I_access_files_in_my_Dropbox_account.html

Ok, I thought you could not connect to Dropbox at all.

I have no reports from other users that there is a general problem like this, so there must be something special about the files in your Dropbox account that causes this problem.

You mention the amount of files. How many files and subfolders do you have in the folder you try to open? Are there maybe any special file names?

It's hard for me to reproduce without additional details.

Please tap on the circled "i" next to the Dropbox connection and check if it says "Linked". If it isn't linked, please tap on the row to link the connection to your Dropbox account.

You can add custom syntax definitions to Textastic by using TextMate bundles. See
http://www.textasticapp.com/v6/manual/lessons/How_can_I_add_my_own_syntax_definitions__themes_and_templates.html

A quick search for "Vala tmbundle" in Google brought up this TextMate bundle which should work:

https://github.com/technosophos/Vala-TMBundle

Just yesterday I successfully used the new syntax highlighter for the first time to highlight complex Python code with the latest Sublime Text 3 Python syntax definition. It's coming along nicely.

Hello,

how exactly are you trying to access Dropbox? Do you use Textastic's built-in Dropbox support (see https://www.textasticapp.com/iphone/v6/manual/lessons/How_do_I_access_files_in_my_Dropbox_account.html) or do you use the "Open…" command in Textastic?

If you use the built-in Dropbox support you should start at the root folder of your Dropbox account and you can tap on subfolders to navigate down. To navigate up again, you use the back button in the top left corner.

Currently not, but it is something I want to add in a future update.

Yes, sure.

Sounds like a useful idea.