After several dozens of succesful burns (and even one home-made divx-svcd conversion and burn) something finally happened. Computer wouldn't burn cue files anymore. Not one particular cue, but any. I tried fireburner 1.0.6 and 2.1.6, Nero 5.58, even cdrwin (not cracked, but in demo mode - with 1x burning speed - you can tell i was desperate!). 6 coasters so far. I read some threads on this forum first and i will try this daemon-tool/cd-copy trick when i get home today - thanks for everybody suggesting that. But i want to be able to just burn those cue's! I don't want to extract mpg and lose all chapters etc.. (and i don't think new bin/cues will work anyway..) This is a fireburner log i got first:

Recording device: SONY CD-RW CRX140E
Firmware version: 1.1a
Recording method: Session-at-once
Recording Speed: 4x
//----------------------------------------------------------------------
// Burning - data is being permanently written to CD
//----------------------------------------------------------------------
Thread1: Executing (Cache enabled)
Thread1: Setting Write Parameters
Thread1: Write parameters set
Thread1: Reading Disc Info
Thread1: Reading Next Track Info
Thread1: Start LBA is 286061
Thread1: Sending Cue Sheet
Thread1: Error sending cue sheet
Thread1: Sense Error: ILLEGAL_REQUEST (INVALID FIELD IN COMMAND
PACKET) (0x05 0x24 0x00)
Recording aborted due to error

In other cases i got Thread2: Sense Error: NO_SENSE error and "recording completed" (after about 30sec of burning). This resulting VCD contained proper vcd structure and even played on my stand-alone pioneer for about 15 secs.

Please tell me what could have happened to my comp/burner/soft (or just my head?!). I mean it used to burn everything just fine even with old fireburner 1.0.6. Any help/idea is greatly appreciated.