As stated somewhere else I would recommend an option what icons to use. If I use an external icon dll. I would consider to keep the default windows icons.
I have no external packer installed. I would really appreciate to use the default icons if available. (If not available you could still show the old internal icon.)
It may be the icon of a "competitor". (IMO there is no competitor for TC) But that icon was chosen by the user and you respect this choice at every other icon.
I do not ask you to remove the ability to open packed files in TC itself. This is one of the key features of TC and I love it.
I will try to locate the source of the explorer pack-icon, though. I will report back on this.
Thanks for your feedback! Btw, since there is no open archive icon, I show the small green arrow while opening the archive. You can only see it when opening really large archives, though.