Halloween quest error help??

[kogepan]

After I fed the cats I went into the Mountains place and then when it was loading I got this error with like weird foreign letters and then it closed my game. Then when I tried logging in again I get the error, because I'm still in the place. Help? How do I fix it?

[valiant1709]

When getting errors while playing:

• First, try downloading the updated adata.grf: http://anthem.ath.cx/adata.grf
• If that doesn't get rid of the errors, download the full installer ( http://anthem.ath.cx/AnthemROFull091017.exe ) and patch using AnthemPatch.exe, or download the above mentioned adata.grf, and save it to your RO folder, overwriting any existing adata.grf!
• In case you know that you have all the BGMs (until 132.mp3), you can try downloading the sdata.grf instead of the full installer: http://anthem.ath.cx/sdata.grf

Last but not least: you want a Halloween/autumn-themed Prontera? Here we go! Download the following zip file to your RO folder, and when asked to overwrite your data.ini file, choose 'yes'. To remove it, simply delete the file called 'ahalloween.grf' in your RO folder!
Download by clicking on the screenshot:

Credits for the map edits go to Keale and shadylemonade from the eathena.ws boards!

Go and have some fun with the Halloween Event!
Fidelis - out.