diff --git a/chrome/content/zotero/xpcom/utilities_internal.js b/chrome/content/zotero/xpcom/utilities_internal.js
index e629db44d..d5935527e 100644
--- a/chrome/content/zotero/xpcom/utilities_internal.js
+++ b/chrome/content/zotero/xpcom/utilities_internal.js
@@ -658,16 +658,18 @@ Zotero.Utilities.Internal = {
 		var g = gen.next ? gen : gen();
 		var seq = 0;
 		
+		const PR_UINT32_MAX = Math.pow(2, 32) - 1;
 		var pipe = Cc["@mozilla.org/pipe;1"].createInstance(Ci.nsIPipe);
-		pipe.init(true, true, 0, 0, null);
+		pipe.init(true, true, 0, PR_UINT32_MAX, null);
 		
 		var os = Components.classes["@mozilla.org/intl/converter-output-stream;1"]
 			.createInstance(Components.interfaces.nsIConverterOutputStream);
 		os.init(pipe.outputStream, 'utf-8', 0, 0x0000);
 		
+		
 		pipe.outputStream.asyncWait({
 			onOutputStreamReady: function (aos) {
-				Zotero.debug("Output stream is ready");
+				//Zotero.debug("Output stream is ready");
 				
 				let currentSeq = seq++;
 				
@@ -710,6 +712,12 @@ Zotero.Utilities.Internal = {
 						}
 					}
 					
+					if (error) {
+						Zotero.debug("Closing input stream");
+						aos.close();
+						throw error;
+					}
+					
 					if (typeof data != 'string') {
 						throw new Error("Yielded value is not a string or promise in " + funcName
 							+ " ('" + data + "')");
@@ -733,14 +741,6 @@ Zotero.Utilities.Internal = {
 					Zotero.debug("Writing " + data.length + " characters");
 					os.writeString(data);
 					
-					if (error) {
-						Zotero.debug("Closing input stream");
-						aos.close();
-						throw error;
-					}
-					
-					Zotero.debug("Waiting to write more");
-					
 					// Wait until stream is ready for more
 					aos.asyncWait(this, 0, 0, null);
 				}, this)
diff --git a/components/zotero-protocol-handler.js b/components/zotero-protocol-handler.js
index c82fade40..372e470e1 100644
--- a/components/zotero-protocol-handler.js
+++ b/components/zotero-protocol-handler.js
@@ -444,26 +444,12 @@ function ZoteroProtocolHandler() {
 					
 					default:
 						this.contentType = 'text/html';
-						
-						// DEBUG: Results in mangled reports
-						//
-						// https://forums.zotero.org/discussion/64022/5-0-beta-generate-report-is-often-garbled
-						/*return Zotero.Utilities.Internal.getAsyncInputStream(
-							Zotero.Report.HTML.listGenerator(items, combineChildItems),
-							function () {
-								return '<span style="color: red; font-weight: bold">Error generating report</span>';
-							}
-						);*/
-						
-						Components.utils.import("resource://gre/modules/NetUtil.jsm");
-						var is = Zotero.Utilities.Internal.getAsyncInputStream(
+						return Zotero.Utilities.Internal.getAsyncInputStream(
 							Zotero.Report.HTML.listGenerator(items, combineChildItems),
 							function () {
 								return '<span style="color: red; font-weight: bold">Error generating report</span>';
 							}
 						);
-						var str = NetUtil.readInputStreamToString(is, is.available(), { charset: "UTF-8" });
-						return Zotero.Promise.resolve(str);
 				}
 			});
 		}