Hi Greg and Sandor,
I performed all the steps you suggested, and used the test dataset provided here (https://www.dropbox.com/sh/54igm0xxmtlo4...).
With the test data also, I do not get any reformatted images.

As Sandor mentioned, I copied the log into the terminal and here is what it said - 

At line:1 char:1467
+ ... t_data/gehirn_Registration_2022-9-11-11-20/gehirn_warp.list & cmtk re ...
+ ~
The ampersand (&) character is not allowed. The & operator is reserved for future use; wrap an ampersand in double quotation marks ("&") to pass it as part of a string.
At line:1 char:1843
+ ... t_data/gehirn_Registration_2022-9-11-11-20/gehirn_warp.list & cmtk re ...
+ ~
The ampersand (&) character is not allowed. The & operator is reserved for future use; wrap an ampersand in double quotation marks ("&") to pass it as part of a string.
+ CategoryInfo : ParserError: (:) [], ParentContainsErrorRecordException
+ FullyQualifiedErrorId : AmpersandNotAllowed

Am I right in assuming this is in the .ijm code?