A few of frames are half purple. 550D

[robbierob2005]

When shooting 1152x482 24fps in 10 seconds of film (about 240 frames) 1 or 2 frames turn out like this. Does anyone know how to avoid this?
I/m using a 95mb/sec SD-card

[Kim.dh]

Using Canon preview or Hacked preview?

[robbierob2005]

Is was on automatic. I'm using the ML_550D_June_26_2013_Update. My Sd cars can write 95mb/sec
I'll try different settings this weekend.

With the 1152x482 resolution I was able to film 12 seconds. I manualy stopped the record at 10 seconds to avoid corrupting the RAW-file.