Error: the file couldn't be opened

Using the latest version of Textastic for iPhone or iPad, the "recent files" list does not work for files from OneDrive.

Here is what I do:

- Open.. and find a file on onedrive - the file opens fine

- Go back to the menu and click on "Recent Files"

- select the file I just opened

- get an error "The file couldn't be opened".

If I go via the Open... link again and find the same file, I can open it again no problem.

I do find then that it now appears twice in the "Recent Files" menu - from the first attempt and now the second attempt, and neither of them work,