help i have a problem installing Aion from ncsoft

hi , i'm new at Aion and i downloaded the Ncsoft program to download the game...
well the download finished yesterday but when i install the game it reach to 45% then i got an error , i downloaded the game not to C drive becouse i dont hav enough space there , so downloaded to D drive , if its matter. the error is "Error code 25 :(FileGroupDirectoryNotFound)"
well here is a screenshot of my problem
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Thank.

rightclick in the launcher on aion -> settings (preferences) -> put in the path to the aion dir

mach mal im launcher rechtsklick auf aion links in der liste -> eigenschaften -> aion verzeichnis neu angeben