Few weird tweaks; don't know exactly how this can happen.

1 files changed, 2 insertions, 0 deletions

diff --git a/VP-roomwork.lua b/VP-roomwork.lua
index 475b9a8..2986d9d 100644
--- a/VP-roomwork.lua
+++ b/VP-roomwork.lua
@@ -55,6 +55,8 @@ function patch_logic(logic, windows, activate_debug)
             txtptr = andB(opcode, 0xff) + 1 - ptr_start
             if txtptr < 0 then return end
             local window = windows[txtptr + ptr_start]
+            if not window then return end
+            if window.wtype == "fixed" then return end
             local arg1 = orB(window.x, shl(window.y, 16))
             local arg2 = orB(window.width, shl(window.height, 16))
             patch_opcode(PC + 1, arg1)