diff --git a/checkin_notes b/checkin_notes
index e2ad4c5667..e305280d3b 100755
--- a/checkin_notes
+++ b/checkin_notes
@@ -3905,6 +3905,8 @@ Charlie 17 Apr 2006
     - Mac: Don't customize name of BOINC Data directory for branding; change 
         "GridRepublic Manager" to "GridRepublic Desktop; make branding script 
         more robust if there is a space in any file or directory name or path.
+    - Mac: clarify that upgrade warning from older versions applies only to 
+        Intel Macs.
       
     clientgui/
         BOINCGUIApp.cpp
@@ -3913,5 +3915,8 @@ Charlie 17 Apr 2006
         GR-ReadMe.rtf
         PostInstall.cpp
         preinstall
+        ReadMe.rtf
         release_boinc.sh
         release_GridRepublic.sh
+    doc/
+        versions.inc
diff --git a/doc/versions.inc b/doc/versions.inc
index 728a2fac88..b2c64905a5 100644
--- a/doc/versions.inc
+++ b/doc/versions.inc
@@ -247,10 +247,10 @@ $mac_changes_54= "
             production SETI@home project and Einstein@home have applications 
             for this platform.  
         <li> Upgrade warning: You may lose unreported results if you are upgrading 
-            from a version of BOINC earlier than 5.4.0, or if you are transferring 
-            BOINC Data from a PowerPC Mac to an Intel Mac, or from an Intel Mac to 
-            a PowerPC Mac.  To prevent this, open BOINC Manager window, select 
-            the Projects tab, select each project and  press the Update button.  
+            from a version of BOINC earlier than 5.4.0 on an Intel Mac, or if you are 
+            transferring BOINC Data from a PowerPC Mac to an Intel Mac, or from an 
+            Intel Mac to a PowerPC Mac.  To prevent this, open BOINC Manager window, 
+            select the Projects tab, select each project and  press the Update button.  
             Then select the Tasks tab and make sure there are no tasks \"Ready to report.\"            
         <li> We are now building with newer tools and libraries: XCode 2.2, 
             WxWidgets 2.6.2, libcurl 7.15.1.
diff --git a/mac_installer/GR-ReadMe.rtf b/mac_installer/GR-ReadMe.rtf
index 7cfb8e49b6..e45b84d1cd 100644
--- a/mac_installer/GR-ReadMe.rtf
+++ b/mac_installer/GR-ReadMe.rtf
@@ -26,7 +26,7 @@ This is a
 \
 
 \f0\b Upgrade warning: You may lose unreported results
-\f1\b0  if you are upgrading from a version of GridRepublic or BOINC earlier than 5.3.21, or if you are transferring GridRepublic or BOINC Data from a PowerPC Mac to an Intel Mac, or from an Intel Mac to a PowerPC Mac.  To prevent this, open GridRepublic Desktop's window, select the 
+\f1\b0  if you are upgrading from a version of GridRepublic or BOINC earlier than 5.3.21 on an Intel Mac, or if you are transferring GridRepublic or BOINC Data from a PowerPC Mac to an Intel Mac, or from an Intel Mac to a PowerPC Mac.  To prevent this, open GridRepublic Desktop's window, select the 
 \f2\i Projects
 \f1\i0  tab, select each project and  press the 
 \f2\i Update
diff --git a/mac_installer/ReadMe.rtf b/mac_installer/ReadMe.rtf
index b68954cef8..facf9ac2d1 100644
--- a/mac_installer/ReadMe.rtf
+++ b/mac_installer/ReadMe.rtf
@@ -7,7 +7,7 @@
 \margl1440\margr1440\vieww9000\viewh9000\viewkind0
 \pard\tx720\tx1440\tx2160\tx2880\tx3600\tx4320\tx5040\tx5760\tx6480\tx7200\tx7920\tx8640\qc
 
-\f0\b\fs28 \cf0 Macintosh BOINCManager Version 5.3.28 Release Notes\
+\f0\b\fs28 \cf0 Macintosh BOINCManager Version 5.5.50 Release Notes\
 \pard\tx720\tx1440\tx2160\tx2880\tx3600\tx4320\tx5040\tx5760\tx6480\tx7200\tx7920\tx8640\ql\qnatural
 
 \f1\b0\fs24 \cf0 \
@@ -26,7 +26,7 @@ This is a
 \
 
 \f0\b Upgrade warning: You may lose unreported results
-\f1\b0  if you are upgrading from a version of BOINC earlier than 5.3.21, or if you are transferring BOINC Data from a PowerPC Mac to an Intel Mac, or from an Intel Mac to a PowerPC Mac.  To prevent this, open BOINC Manager's window, select the 
+\f1\b0  if you are upgrading from a version of BOINC earlier than 5.3.21 on an Intel Mac, or if you are transferring BOINC Data from a PowerPC Mac to an Intel Mac, or from an Intel Mac to a PowerPC Mac.  To prevent this, open BOINC Manager's window, select the 
 \f2\i Projects
 \f1\i0  tab, select each project and  press the 
 \f2\i Update