Ah yes, I was aware of this issue earlier, but finally got around to fixing it.
I've made the following fixes:
1. The User Profile chart will now display a "?" mark in the Today column if the previous day's xp is unknown.
2. The User Profile chart will now display a "?" mark in the This Week column if the previous Sunday's xp is unknown.
3. The Personal Records chart will now not display records that were achieved by just getting a skill on the highscores. For example, if your Attack went from unranked to ranked, and since rank 2M on the RuneScape highscores is at about 300K, the chart would have previously shown that you gained 300K xp. The chart will now disregard records gained on days where in the previous day the stats weren't ranked.
4. The "Change" column of the User History page will now display a "?" if one of the two chosen date ranges' stats weren't ranked on the highscores.
Let me know if there's any further issues.
