I'm sorry to say that there a some serious problems in the new versions (4.5.x.x) of CDBurnerXp.
First: Burning a CD or DVD and verifying it after burning will cause the program to hang. It will go to 99% and then hang. I tried it with different CD's and DVD's on different hardware.
With the older version (4.4.x.x) no problems at all.
Second: The new version (4.5.x.x) will not work with multi session CD's or DVD's burned with an older version (4.4.x.x) of CDBurnerXP. The new version says unknown format. Even the CDBurnerXP media information shows the format and sessions.