Black frame while scrubbing and CTRL+SPACEBAR doesn't play timeline
 

When I attempt to CTRL+SPACEBAR playback my rendered effects, my CTI goes directly at the end of the timeline and nothing plays. I can play timeline well with just SPACEBAR, but sometimes I get frozen or scrambled video at the start (2-3 first seconds). BTW I always had problem of an audio bump about 3-4 sec. after hit play, but had gotten used to it in my workflow, but it looks somewhat familiar since both occur only at the start of a playback.

Also, it started to show black screen on my program window instead of showing my the actual frame that the CTI is on when I'm scrubbing with the arrows 1 frame a t a time. Sometime depending on if I scrub left or right image will show, but this is not a rule.

This doesn't happens always and seems to occur more when the project has been open for a longer period of time (I'm talking around 30 min here...)

At first I thought it was the project size (29 MB), but even after splitting it in 2 15MB project it still does it.

OS: XP Professional
CPU: AMD Athlon 64 x2 +4600
CPU Speed: 2.6GHz
CPU Configuration: Single Dual-Core
Main Memory: DDR2 SDRAM
Memory Amount: 4GB
Video Drive: Multiple video drives in RAID configuration
System Usage: General Usage also (Email, Internet, Office, etc.)
Camera/Deck Model #: Sony HVR-Z1
Motherboard Manufacturer: ASUS
Motherboard Model #: M2N-SLI Deluxe
Graphics Card Model #: NVIDIA Quadro FX 1500
Product Name: AspectHD
Version #: v5 Build 115

Open support ticket at www.cineform.com/support if you haven't already. We'll troubleshoot this from there.

ticket openned, just posted it online too to get possible feedback from other users who may have had this bug...