Hi
I assume your project plays OK when you preview your sequence line.
I don't think the number of files is causing the problem. I am currently working on a 45 minute project that has (so far) 310 video clips and numerous images and which has generated 4386 files (1.09 Gb) in the cache folder! I am using version 2.41 and it is working correctly and I have had no problems. (I fell asleep using version 3.12 when I tried it with this.
and didn't get far enough to see if it would crash!)
What format are your video clips?
What format are your images...(TIFF....jpg.....bmp...etc.)
What size are they... pixel x pixel and Kb?........And are they all the same?
I usually use raw images taken with my video camera which are jpgs 1280 x 720 pixels and each of 11 Mb. As these are the same frame size as any video I shoot I can just add them into the sequence where I want. (Also snapshots from the actual footage as well as stabilized avi clips in places.) Never had a problem rendering them.
There may be a problem with your image type but offhand I can't see why, if it plays OK in the VP preview you can't render it to an avi file.
Nat