Blu-ray burning error with DVD Factory 2010

[EES]

I am trying to burn a blu-ray disk and finish a VS X3 project, but I am randomly getting burning errors in DVD Factory 2010.
I know about the new DMF 7 SE to solve the problems of DF 2010. In fact I have both installed, but I prefer the kind of menus of DF 2010 and I think there is no way to create DD5.1 in 7SE.

So, two problems with DF2010 for me: 1) the recurrent burning error after 45 min (at the end of recording, I guess), and 2) there is no way to record to disk and then try to burn with Imgburn or other tools (is this solved again in DMF 7 SE?).

I would say that it works ok once every 4 trials, with verbatim, sony or tdk bd-re disks 25 or 50 GB (for 11 GB), sometimes after doing a full erase of the disk (1 hour). I am just trying to get the bd-re disk and then I would copy the two folders to disk and would write the final bd-r with imgburn (I never had a bad disk recording bds with imgburn). I did the previous tests with dvd+rw and bd-re in standard definition with X3 and DF2010 without problems. The problems arose with bd-re and hd. Is hard to lose 4-5-6 hours to burn a blu-ray.

Thanks in advance for any idea.