First, Microstudio will only burn CDG files that it imports from a CDG disc, or that are made with Karaoke Pro (or Home Producer). These contain the audio and graphic R-W data used by CDG, identical to what is found on a CDG Karaoke disc. You cannot use dkr files with Microstudio.
Second, to help you with the errors you are having, you need to write down exactly what the messages are, including any numbers. Post them back here so we can see them. Then we can try to help you. Please read the instructions on ASPI
in this Thread.