When I say nothing happens, I mean the Download button is highlighted when I click it, but I don't see anything downloading in the status bar, and no message. I verified that Aldiko has my ADE username password. I see "DeAuthorize Device". I have only authorized ADE to this Vox through Overdrive and Aldiko. I don't know what browser Aldiko is using. I have Dolphin installed, but not setup as default. I went into Dolphin and confirmed the download path you stated.
I also have Aldiko on the SD card, as I see the "Move yo Kobo eReader" button.
Here is what I do.
I launch Aldiko and click on "My catalogs"
I have one catalog, pointed at
http://overdrive.stcatharines.library.on.ca
I click that and a browser opens to that site. The menu system is that of Aldiko. I see "View in Browser", "Close", "Back", "Forward", "Home".
I click the Login link. My library card number and PIN are saved. I click the Login button.
I can see items in "My Digital Media Items Out" that I have out through Overdrive.
I find a book I want, and click on "add to cart", then "Proceed to Checkout", then "Confirm check out". I click on "Download". briefly see the address bar change to "ofs.contentserve.com" and see blue rapidly progress from left to right accross the address. And that's it. No download in the status bar. No messages. I check the download folder. Nothing.
Also, if I try to import ePub files in Aldiko that I have downloaded in Overdrive, I get a "Could not load file" errror