Hi.
I got a error message when I try to start the game on Windows 8.1.

i meet the same problem bro ,have you solved the problem ?

After few months I switched from W8.1 to W10 Pro. The game no longer had this problem and is running fine.

i use win11 now,maybe this game only support win10,thanks for replying my question.

Same here, same error message, same OS (win11) with new laptop.

Try to enable the W10 compatibility mode, maybe this works

___________________________________________
############################################################################################
FATAL ERROR in
action number 1
of Create Event
for object objInit:

unable to add a number to string
############################################################################################
--------------------------------------------------------------------------------------------
called from - gml_Object_objInit_Create_0 (line 130)

___________________________________________
############################################################################################
FATAL ERROR in
action number 1
of Other Event: User Defined 5
for object objDropdownLanguage:

unable to convert string "" to number
############################################################################################
--------------------------------------------------------------------------------------------
called from - gml_Object_objDropdownLanguage_Other_15 (line 49)
called from - gml_Object_objDropdown_Other_12 (line 21)
called from - gml_Object_objDropdown_Step_2 (line 24)

I have this same problem. Impossible to run the game.

__________________________________________
############################################################################################
FATAL ERROR in
action number 1
of Create Event
for object objInit:

unable to add a number to string
############################################################################################
--------------------------------------------------------------------------------------------
called from - gml_Object_objInit_Create_0 (line 130)


same error, running as administrator, applying patches, re-installing and compatibility modes don't fix this

Same error -- I was able to run the game by going back to version 1.4.3 (turn off automatic updates, Manage Installation -> Configure, Select 1.4.3 under updates.

worked for me.