[GeoffR]

Originally Posted by Martina Schein

After installation on my reader it is not possible to open eBooks. As soon as I try, the reader restarts automatically. I tried this with several eBooks.

I think I've found the problem: Here is a correction (in red) to the ePub fixed/adjustable top/bottom margins patch:

    # QString.arg(double, ...) --> QString.arg(int64, ...)
  - ReplaceBytes: {Offset: 0x4843B8, FindH: 97 F7 DE E9, ReplaceH: 8B F7 3E EA}

This is the complete patch with the correction applied (libnickel.so.1.0.0.yaml):

Spoiler:

ePub fixed/adjustable top/bottom margins:
  - Enabled: no
  - PatchGroup: ePub padding-bottom alternatives
  - Description: |
      This patch sets the @page margin sizes in epubs, overriding any @page margin
      set in the book's CSS stylesheet (but not in the XPGT stylesheet, see below).
      
      By default the top and bottom margins are set to be adjustable, their size
      similar to the left/right margin size set by the adjustment slider. There
      are options to set the top and/or bottom margin to a fixed size instead.
      
      Note that @page margins are seperate from (and overlap) both the body margins
      set in the book and the left/right margins set from the adjustment slider,
      and are added to any page margins set in the Adobe XPGT stylesheet if the
      book has one (e.g. page-template.xpgt). For this reason you might want to
      consider using the Modify ePub Calibre plugin to remove any body margins and
      XPGT stylesheet margins before sideloading the book, or perhaps enabling the
      `Ignore ePub Adobe XPGT stylesheet (page-template.xpgt)` patch.
      
      Also note that a side-effect of this patch is that the body padding-bottom is
      removed from the built-in stylesheet, which means that there will no longer
      be a blank line added automatically at the end of chapters.
      
      See at the bottom of the patch for replacement values that can be used to
      tune the size of the margins to suit different devices and reading modes.
    # Push an extra 8 bytes of scratch space onto the stack
  - ReplaceBytes: {Offset: 0x483FB0, FindH: C9 B0, ReplaceH: CB B0}
  - ReplaceBytes: {Offset: 0x483FB4, FindH: 02 AF, ReplaceH: 04 AF}
    # Save this value for the third stack argument of the following function call
  - ReplaceBytes: {Offset: 0x484348, FindH: AD F8 04 20, ReplaceH: 02 92 01 92}
    # getReadingLineHeight(...) --> getReadingLeftMargin(...)
  - ReplaceBytes: {Offset: 0x48439C, FindH: AA F7 8A EF, ReplaceH: 8B F7 DC EE}
    # (Setup call to QString.arg)
  - ReplaceBytes: {Offset: 0x4843A0, FindH: 20 22 4F F0 FF 33, ReplaceH: 00 23 01 22 0A 21}
  - ReplaceBytes: {Offset: 0x4843A6, FindH: 07 F1 70 0A, ReplaceH: 00 93 01 91}
  - ReplaceBytes: {Offset: 0x4843AA, FindH: AD F8 04 20 00 93, ReplaceH: 42 43 92 08 01 3A}
  - ReplaceBytes: {Offset: 0x4843B0, FindH: 50 46 67 23, ReplaceH: B8 BF 00 22}
  - ReplaceBytes: {Offset: 0x4843B4, FindH: 00 22 49 46, ReplaceH: 20 A8 49 46}
    # QString.arg(double, ...) --> QString.arg(int64, ...)
  - ReplaceBytes: {Offset: 0x4843B8, FindH: 97 F7 DE E9, ReplaceH: 8B F7 3E EA}
    #
    # (There wasn't room to load sl above)
    # mov r1,sl; --> adds r1,sp,#128
  - ReplaceBytes: {Offset: 0x4843BC, FindH: 51 46, ReplaceH: 20 A9}
    # (Remember to pop scratch space if necessary)
    #
    #      padding-bottom: %1em !important;\n
    # --> }@page{margin:%1px 00px %1px}body{
  - FindReplaceString:
      Find: "\x20padding-bottom: %1em !important;\n"
      Replace: "}@page{margin:%1px 00px %1px}body{"
    #
    #
    # *** Replacement values start here, don't change anything above ***
    #
    # Optional replacement value: Uncomment for a FIXED TOP MARGIN size in px,
    # default 25px. Replacement value is margin size, two digits:
    # (Leave commented out for an adjustable top margin.)
# - ReplaceString: {Offset: 0x0E, Find: "%1", Replace: "25"}
    #
    # Optional replacement value: Uncomment for a FIXED BOTTOM MARGIN size in px,
    # default 00px. Replacement value is margin size, two digits:
    # (Leave commented out for an adjustable bottom margin.)
# - ReplaceString: {Offset: 0x18, Find: "%1", Replace: "00"}
    #
    # Optional replacement value: Uncomment to set the minimum LEFT/RIGHT MARGIN
    # size in px, default 15px. (This margin will overlap the left/right margin
    # set with the adjustment slider, not add to it.) Replacement value is margin
    # size, two digits
# - ReplaceString: {Offset: 0x13, Find: "00", Replace: "15"}
    #
  - BaseAddress: 0
    #
    # Replacement value: Sets the step-size of the ADJUSTABLE top/bottom margin
    # (if any) in quarter-pixels. These suggested values should be very close to
    # the 1% step size of the left/right margins set by the slider. Larger values
    # will make the top/bottom margins larger than the left/right margins.
    # Suggested values:
    #   24 (Touch/Mini)
    #   30 (Glo/Aura/Aura2ed)
    #   43 (AuraHD/H2O/GloHD/ClaraHD)
    #   56 (Aura One)
  - ReplaceInt: {Offset: 0x4843A2, Find: 1, Replace: 30}
    #
    # Replacement value: Set this to the size of the device's built-in top margin,
    # in pixels. This value is subtracted from the adjustable top/bottom margin
    # (if any) to compensate for any unremovable built-in top margin.
    # Suggested values are:
    #   0 For full-screen reading mode (fullScreenReading=true, all devices)
    #  15 for normal reading mode (with custom or disabled footer, all devices)
  - ReplaceInt: {Offset: 0x4843AE, Find: 1, Replace: 0}

(I haven't tested this myself though, I'm not running this firmware version on my Glo.)