// Emergency cleanup of trees
                if (this.trees != null) {
                    try {
                        // Clear all tree references
                        for (SmbTreeImpl tree : this.trees) {
                            try {
                                // Force release trees during emergency cleanup
                                tree.release();

				"application/vnd.powerbuilder75-s",
				"application/vnd.preminet",
				"application/vnd.previewsystems.box",
				"application/vnd.proteus.magazine",
				"application/vnd.publishare-delta-tree",
				"application/vnd.pvi.ptid1",
				"application/vnd.pwg-multiplexed",
				"application/vnd.pwg-xhtml-print+xml",
				"application/vnd.qualcomm.brew-app-res",
				"application/vnd.quark.quarkxpress",

                    }
                    break;
                }

                if (nextHead != null) {
                    // prepare remaining
                    // (e.g. set session/tree/fileid returned by the previous requests)
                    resp.prepare(nextHead);
                }
                curHead = nextHead;
            } finally {