When trying to put restrictions on players in the tvt event ( in the post "TvT and dualbox" ), I learned that for the version of Grace Epilogue gave the following error when trying to copilar:
The solution for this, is to replace that line by the following:htmContent = HtmCache.getInstance().getHtm("data/html/mods/TvTEvent/ForbiddenIp.htm");
And it'll be correct.htmContent = HtmCache.getInstance().getHtm(playerInstance.getHtmlPrefix(), htmlPath+"ForbiddenIp.htm");