I recently reported a problem when using Masks in version 7.5 of PTE (Iam using windows XP with an Intel Graphics Driver). This has now been rectified by downloading PTE 7.5.2 beta, however, when I try to create a HD video (MP4) file of the same project there is still a problem with the output in the slide containing the mask (ie it appears to "stall" half way through the slide when the mask comes into play). The main image should be displayed for the duration of the slide and during this period, text is gradually revealed. In the MP4 file, the main image is displayed but the text reveal "stalls" half way through. Does this mean that the problem still exists with the video builder?