Problem with latest versions of OWB

I have been using OWB on my uA1c with OS4.1 for quite some time. I recently downloaded and tried the latest version (3.21) and although it works for browsing most web sites, I discovered that I can no longer successfully log onto my account with my local credit union. What happens is that I go to the credit union's web site, enter my username and password, and then the credit union's web site throws up another screen in which it asks me to answer one of several security questions. After answering the question, another screen is displayed saying that it cannot connect me.

I have just completed a series of tests and can report that OWB versions 3.11, 3.13, and 3.15 all work just fine, and I can connect to my credit union and manage my account. However, versions 3.17, 3.19, 3.20, and 3.21 all fail when trying to connect to my credit union. The versions which work (3.11, 3.13, and 3.15) all use a file called "cookieCollection.txt" whereas the later versions which are giving me trouble use a file called "cookieCollection.db".

Can anyone give me any suggestions as to what I can do to fix this or is this a bug that needs to be addressed?

Must add , there is one more problem wiht OWB, (with amigans.net). From time to time something wrong with cookies start to be, and i can't read any post whyle i login in. It's looks like i choice any post and owb start to redirect me between two pages all the time. Erasing of cookiedata file help with it, but after a whyle it's again happenes and i need erase it again.

@kas1e

I have tried deleting the cookie files and then restarting OWB without any success. I have heard that the latest versions of OWB (those that use the "cookieCollection.db" files use a cookie engine called IIRC. Is there anything that I should have done to "install" IIRC in order to get it functioning properly?