It reports something like this in install phase: for icon in address-book-new.png appointment-new.png bookmark-new.png contact-new.png document-new.png document-open.png document-print.png document-print-preview.png document-properties.png document-save.png document-save-as.png edit-clear.png edit-copy.png edit-cut.png edit-delete.png edit-find.png edit-find-replace.png edit-paste.png edit-redo.png edit-select-all.png edit-undo.png folder-new.png format-indent-less.png format-indent-more.png format-justify-center.png format-justify-fill.png format-justify-left.png format-justify-right.png format-text-bold.png format-text-italic.png format-text-strikethrough.png format-text-underline.png go-bottom.png go-down.png go-first.png go-home.png go-jump.png go-last.png go-next.png go-previous.png go-top.png go-up.png list-add.png list-remove.png mail-forward.png mail-message-new.png mail-mark-junk.png mail-reply-all.png mail-reply-sender.png mail-send-receive.png media-eject.png media-playback-pause.png media-playback-start.png media-playback-stop.png media-record.png media-seek-backward.png media-seek-forward.png media-skip-backward.png media-skip-forward.png process-stop.png system-lock-screen.png system-log-out.png system-search.png system-shutdown.png tab-new.png view-refresh.png window-new.png ; do \ /usr/bin/convert -bordercolor Transparent -border 1x1 22x22/actions/$icon 24x24/actions/$icon; \ done) convert: no decode delegate for this image format `22x22/actions/address-book-new.png'.
*** This bug has been marked as a duplicate of bug 161592 ***
Fixed in 0.8.0