Index: /trunk/src/VBox/Additions/solaris/SharedFolders/vboxfs_prov.c
===================================================================
--- /trunk/src/VBox/Additions/solaris/SharedFolders/vboxfs_prov.c	(revision 38104)
+++ /trunk/src/VBox/Additions/solaris/SharedFolders/vboxfs_prov.c	(revision 38105)
@@ -84,5 +84,5 @@
 	if (version != SFPROV_VERSION)
 	{
-		cmn_err(CE_WARN, "sfprov_connect: wrong version");
+		cmn_err(CE_WARN, "sfprov_connect: wrong version. version=%d expected=%d", version, SFPROV_VERSION);
 		return NULL;
 	}
@@ -140,5 +140,5 @@
 	rc = vboxCallMapFolder(&vbox_client, str, &m->map);
 	if (!RT_SUCCESS(rc)) {
-		cmn_err(CE_WARN, "sfprov_mount: vboxCallMapFolder() failed");
+		cmn_err(CE_WARN, "sfprov_mount: vboxCallMapFolder() failed rc=%d\n", rc);
 		kmem_free(m, sizeof (*m));
 		*mnt = NULL;
@@ -159,5 +159,5 @@
 	rc = vboxCallUnmapFolder(&vbox_client, &mnt->map);
 	if (!RT_SUCCESS(rc)) {
-		cmn_err(CE_WARN, "sfprov_mount: vboxCallUnmapFolder() failed");
+		cmn_err(CE_WARN, "sfprov_mount: vboxCallUnmapFolder() failed rc=%d\n", rc);
 		rc = EINVAL;
 	} else {