S-B-T-C wrote:Not pf1bit
The error means your land collision detection bitmap is in the wrong format.
Implementation of land collision detection uses a large chart bitmap as reference.
To minimize memory usage, vrtool uses a monochrome, one bit-per-pixel BMP file format.
Default file is monoBmpGSHHS_24k12k.bmp
This is a rendering of a GSHHS chart from vrtoutoulz,
generated by vrtool itself (there is a [btn] for that)
You can edit the bmp using Windows Paint or Photoshop.
Make sure you maintain the one bit-per-pixel BMP