plasma fail!

C:\Users\pat\Documents\Downloads>plasma.exe
--- Brick Engine 4.1 ---
Initializing SDL...success!
Zeroing layer list...success!
Setting default render options...success!
Initializing joystick...success!
Initializing default keys...success!
Initializing font list...success!
Adding default font...success!
Initializing audio data structures...success!
Preserving system audio configuration...success!
Registering C functions into tcl...success!
Invalid image
    while executing
"imgload buffer [readfile [file join [file dirname [info script]] $img.png]]"
    ("foreach" body line 6)
    invoked from within
"foreach { img z } { p1 10 p2 10 p3 20 p4 20 } {

   set sprites($img.id) [sprite create]

   # read file from disk into the sprite and set its z-hint
..."
    (file "C:/Users/pat/Documents/Downloads/plasma.exe/lib/app-plasma/plasma.tcl
" line 57)
    invoked from within
"source C:/Users/pat/Documents/Downloads/plasma.exe/lib/app-plasma/plasma.tcl"
    ("package ifneeded app-plasma 1.0" script)
    invoked from within
"package require app-plasma"
    (file "C:/Users/pat/Documents/Downloads/plasma.exe/main.tcl" line 6)
Shutting down SDL...success!