Code:
[Thu Mar 07 19:13:39 2019] [Line:88 Source:UIFiles\neue_velious\EQUI_Animations.xml] Schema error - Duplicate item Spells01.tga
[Thu Mar 07 19:13:39 2019] Error reading XML.
[Thu Mar 07 19:13:39 2019] Error loading skin: loading default skin instead.
looks to me like ur EQUI_Animations.xml has 2x Spells01.tga
i would check Animations for Spells01.tga giving 2x of the same type of code around line 88.
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https://notepad-plus-plus.org/