help me with this. What is this bug?
Full traceback:
File "renpy/bootstrap.py", line 277, in bootstrap
File "renpy/main.py", line 682, in main
File "renpy/main.py", line 146, in run
File "renpy/execution.py", line 937, in run_context
File "00start.rpyc", line 278, in script
File "00start.rpyc", line 278, in script
File "renpy/ast.py", line 1131, in execute
File "renpy/python.py", line 1063, in py_exec_bytecode
File "renpy/common/00start.rpy", line 282, in <module>
File "renpy/game.py", line 346, in call_in_new_context
File "renpy/execution.py", line 937, in run_context
File "_layout/screen_main_menu.rpymc", line 28, in script
File "_layout/screen_main_menu.rpymc", line 28, in script
File "renpy/ast.py", line 1131, in execute
File "renpy/python.py", line 1063, in py_exec_bytecode
File "renpy/common/_layout/screen_main_menu.rpym", line 28, in <module>
File "renpy/common/_layout/screen_main_menu.rpym", line 35, in _execute_python_hide
File "renpy/ui.py", line 299, in interact
File "renpy/display\core.py", line 3423, in interact
File "renpy/display\core.py", line 4304, in interact_core
File "renpy/display\layout.py", line 1175, in event
File "renpy/display\transition.py", line 53, in event
File "renpy/display\layout.py", line 1175, in event
File "renpy/display\layout.py", line 1175, in event
File "renpy/display\screen.py", line 743, in event
File "renpy/display\layout.py", line 1175, in event
File "renpy/display\transform.py", line 774, in event
File "renpy/display\viewport.py", line 298, in event
File "renpy/display\layout.py", line 279, in event
File "renpy/display\layout.py", line 1175, in event
File "renpy/display\layout.py", line 1175, in event
File "renpy/display\viewport.py", line 298, in event
File "renpy/display\layout.py", line 279, in event
File "renpy/display\layout.py", line 1175, in event
File "renpy/display\behavior.py", line 1073, in event
File "renpy/display\behavior.py", line 1008, in handle_click
File "renpy/display\behavior.py", line 329, in run
File "renpy/common/00action_other.rpy", line 578, in __call__
File "game/core/load.rpy", line 40, in custom_load
File "game/core/load.rpy", line 17, in custom_preload
File "/home/tom/ab/renpy-build/tmp/install.linux-x86_64/lib/python2.7/zipfile.py", line 779, in __init__
IOError: [Errno 2] No such file or directory: