diff --git a/checkin_notes b/checkin_notes
index af48c59bb8..d4cad64213 100644
--- a/checkin_notes
+++ b/checkin_notes
@@ -2681,3 +2681,14 @@ David  5 Mar 2009
         handle_request.cpp
         server_types.cpp,h
         sched_send.cpp
+
+David  5 Mar 2009
+    - client: if using anonymous platform, ignore (and complain about)
+        app versions in scheduler reply
+    - client: when reporting anonymous platform apps in sched request,
+        don't include <file_info>s (not relevant to server)
+
+    client/
+        client_types.cpp,h
+        cs_scheduler.cpp
+        cs_statefile.cpp
diff --git a/client/client_types.cpp b/client/client_types.cpp
index 76a863c4e7..34076f6ac0 100644
--- a/client/client_types.cpp
+++ b/client/client_types.cpp
@@ -1157,7 +1157,7 @@ int APP_VERSION::parse(MIOFILE& in) {
     return ERR_XML_PARSE;
 }
 
-int APP_VERSION::write(MIOFILE& out) {
+int APP_VERSION::write(MIOFILE& out, bool write_file_info) {
     unsigned int i;
     int retval;
 
@@ -1185,9 +1185,11 @@ int APP_VERSION::write(MIOFILE& out) {
     if (strlen(cmdline)) {
         out.printf("    <cmdline>%s</cmdline>\n", cmdline);
     }
-    for (i=0; i<app_files.size(); i++) {
-        retval = app_files[i].write(out);
-        if (retval) return retval;
+    if (write_file_info) {
+        for (i=0; i<app_files.size(); i++) {
+            retval = app_files[i].write(out);
+            if (retval) return retval;
+        }
     }
     coprocs.write_xml(out);
 
diff --git a/client/client_types.h b/client/client_types.h
index ddb293ba29..a91299d606 100644
--- a/client/client_types.h
+++ b/client/client_types.h
@@ -427,7 +427,7 @@ struct APP_VERSION {
     APP_VERSION(){}
     ~APP_VERSION(){}
     int parse(MIOFILE&);
-    int write(MIOFILE&);
+    int write(MIOFILE&, bool write_file_info = true);
     bool had_download_failure(int& failnum);
     void get_file_errors(std::string&);
     void clear_errors();
diff --git a/client/cs_scheduler.cpp b/client/cs_scheduler.cpp
index 2b2c4f3d40..b578334801 100644
--- a/client/cs_scheduler.cpp
+++ b/client/cs_scheduler.cpp
@@ -148,7 +148,7 @@ int CLIENT_STATE::make_scheduler_request(PROJECT* p) {
         for (i=0; i<app_versions.size(); i++) {
             APP_VERSION* avp = app_versions[i];
             if (avp->project != p) continue;
-            avp->write(mf);
+            avp->write(mf, false);
         }
         fprintf(f, "    </app_versions>\n");
     }
@@ -700,6 +700,12 @@ int CLIENT_STATE::handle_scheduler_reply(PROJECT* project, char* scheduler_url)
         }
     }
     for (i=0; i<sr.app_versions.size(); i++) {
+        if (project->anonymous_platform) {
+            msg_printf(project, MSG_INTERNAL_ERROR,
+                "App version returned from anonymous platform project; ignoring"
+            );
+            continue;
+        }
         APP_VERSION& avpp = sr.app_versions[i];
         if (strlen(avpp.platform) == 0) {
             strcpy(avpp.platform, get_primary_platform());
@@ -712,6 +718,9 @@ int CLIENT_STATE::handle_scheduler_reply(PROJECT* project, char* scheduler_url)
             }
         }
         if (avpp.missing_coproc()) {
+            msg_printf(project, MSG_INTERNAL_ERROR,
+                "App version uses non-existent coprocessor; ignoring"
+            );
             continue;
         }
         APP* app = lookup_app(project, avpp.app_name);
diff --git a/client/cs_statefile.cpp b/client/cs_statefile.cpp
index 4712ac11a2..a9ee74b8f2 100644
--- a/client/cs_statefile.cpp
+++ b/client/cs_statefile.cpp
@@ -722,6 +722,8 @@ void CLIENT_STATE::check_anonymous() {
     }
 }
 
+// parse a project's app_info.xml (anonymous platform) file
+//
 int CLIENT_STATE::parse_app_info(PROJECT* p, FILE* in) {
     char buf[256];
     MIOFILE mf;