not enough space available on the mounted disc

[zilda]

I have just updated microstudio to 4.24 and when i try to burn a disc with plex writer 40/12/40a which has always worked fine i now get the following message not enough space available on the mounted disc

i get this message no matter what type of disc i use . ie maxwell or tdk R80's

could you plz help in this matter as i use the disc in my jvc player to practice songs

many thanks zilda