What means this error?

[P.O.S.-ition-]

what this mean and what i must to do?
[Runtime Error] : Exception: Access violation at address 006543CE in module 'scar.exe'. Read of address 00000008 in line 104 in script C:\Program Files\SCAR 2.03\includes\srl\srl\core\GameTab.scar

[Yakman]

gametab.scar seems to have this bug, iv seen other people mention it, the best thing to do is just run the script again

or if your writing a script you could put

try
gametab(...
except
writeln('gametab failed')
end

the try statement means that if theres a runtime error, the script wont crash but just do the thing after the except

[Sumilion]

Really ? Cool, never heard of that one :)