MM7Patch v2.5.7
[*] Support (i.e. no problems like crashes) for old saves with inconsequential incorrect data caused by my bug fixed in the previous version.
[-] My bug: The Acid Burst fix that changes its element from Physical to Water was doing so even if it's explicitly set Physical in spells.txt. Now you can also disable the Acid Burst fix by adding FixAcidBurst=0 to INI.