When you edited the sprite, did you rename it to something else? As this the new would be downloaded.
If you did so, I'd suggest to try recreating it as "vp_parallel", if ain't working, set the format to indexalpha, maxbe the black ain't the needed black, so the first pixels will be picked to set the transparency.
If still not working, I'd play with the flags:
HTML Code:
TEFIRE_FLAG_ALLFLOAT 1 // All sprites will drift upwards as they animate
TEFIRE_FLAG_SOMEFLOAT 2 // Some of the sprites will drift upwards. (50% chance)
TEFIRE_FLAG_LOOP 4 // If set, sprite plays at 15 fps, otherwise plays at whatever rate stretches the animation over the sprite's duration.
TEFIRE_FLAG_ALPHA 8 // If set, sprite is rendered alpha blended at 50% else, opaque
TEFIRE_FLAG_PLANAR 16 // If set, all fire sprites have same initial Z instead of randomly filling a cube.