diff --git a/package-lock.json b/package-lock.json
index c3b5554..2f428c6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "solid-logic",
-  "version": "4.0.2",
+  "version": "4.0.3",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "solid-logic",
-      "version": "4.0.2",
+      "version": "4.0.3",
       "license": "MIT",
       "dependencies": {
         "@inrupt/solid-client-authn-browser": "^3.1.0",
diff --git a/package.json b/package.json
index 4df1a9e..cca7391 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "solid-logic",
-  "version": "4.0.2",
+  "version": "4.0.3",
   "description": "Core business logic of SolidOS",
   "type": "module",
   "main": "dist/solid-logic.js",
diff --git a/src/typeIndex/typeIndexLogic.ts b/src/typeIndex/typeIndexLogic.ts
index 178687a..0871438 100644
--- a/src/typeIndex/typeIndexLogic.ts
+++ b/src/typeIndex/typeIndexLogic.ts
@@ -19,12 +19,22 @@ export function createTypeIndexLogic(store, authn, profileLogic, utilityLogic):
         if (!user) throw new Error('loadTypeIndexesFor: No user given')
         const profile = await profileLogic.loadProfile(user)
 
-        const suggestion = suggestPublicTypeIndex(user)
+        let suggestion: NamedNode | null = null
+        try {
+            suggestion = suggestPublicTypeIndex(user)
+        } catch (err) {
+            const message = `User ${user} has no usable profile document directory for publicTypeIndex.`
+            debug.warn(message)
+        }
         let publicTypeIndex
         try {
-            publicTypeIndex = await utilityLogic.followOrCreateLink(user, ns.solid('publicTypeIndex') as NamedNode, suggestion, profile)
+            publicTypeIndex =
+                store.any(user, ns.solid('publicTypeIndex'), undefined, profile) ||
+                (suggestion
+                    ? await utilityLogic.followOrCreateLink(user, ns.solid('publicTypeIndex') as NamedNode, suggestion, profile)
+                    : null)
         } catch (err) {
-            const message = `User ${user} has no pointer in profile to publicTypeIndex file.`
+            const message = `User ${user} has no pointer in profile to publicTypeIndex file: ${err}`
             debug.warn(message)
         }
         const publicScopes = publicTypeIndex ? [{ label: 'public', index: publicTypeIndex as NamedNode, agent: user }] : []
@@ -40,13 +50,21 @@ export function createTypeIndexLogic(store, authn, profileLogic, utilityLogic):
         if (preferencesFile) { // watch out - can be in either as spec was not clear.  Legacy is profile.
             // If there is a legacy one linked from the profile, use that.
             // Otherwiae use or make one linked from Preferences
-            const suggestedPrivateTypeIndex = suggestPrivateTypeIndex(preferencesFile)
+            let suggestedPrivateTypeIndex: NamedNode | null = null
+            try {
+                suggestedPrivateTypeIndex = suggestPrivateTypeIndex(preferencesFile)
+            } catch (err) {
+                const message = `User ${user} has no usable preferences document directory for privateTypeIndex.`
+                debug.warn(message)
+            }
             let privateTypeIndex
             try {
                 privateTypeIndex = store.any(user, ns.solid('privateTypeIndex'), undefined, profile) ||
-                    await utilityLogic.followOrCreateLink(user, ns.solid('privateTypeIndex') as NamedNode, suggestedPrivateTypeIndex, preferencesFile)
+                    (suggestedPrivateTypeIndex
+                        ? await utilityLogic.followOrCreateLink(user, ns.solid('privateTypeIndex') as NamedNode, suggestedPrivateTypeIndex, preferencesFile)
+                        : null)
                 } catch (err) {
-                const message = `User ${user} has no pointer in preference file to privateTypeIndex file.`
+                const message = `User ${user} has no pointer in preference file to privateTypeIndex file: ${err}`
                 debug.warn(message)
             }
             privateScopes = privateTypeIndex ? [{ label: 'private', index: privateTypeIndex as NamedNode, agent: user }] : []
@@ -109,13 +127,35 @@ export function createTypeIndexLogic(store, authn, profileLogic, utilityLogic):
         return scopedAppInstances.map(scoped => scoped.instance)
     }
 
+    function docDirUri(node: NamedNode): string | null {
+        const doc = node.doc()
+        const dir = doc.dir()
+        if (dir?.uri) return dir.uri
+        const docUri = doc.uri
+        if (!docUri) {
+            debug.log(`docDirUri: missing doc uri for ${node?.uri}`)
+            return null
+        }
+        const withoutFragment = docUri.split('#')[0]
+        const lastSlash = withoutFragment.lastIndexOf('/')
+        if (lastSlash === -1) {
+            debug.log(`docDirUri: no slash in doc uri ${docUri}`)
+            return null
+        }
+        return withoutFragment.slice(0, lastSlash + 1)
+    }
+
     function suggestPublicTypeIndex(me: NamedNode) {
-        return sym(me.doc().dir()?.uri + 'publicTypeIndex.ttl')
+        const dirUri = docDirUri(me)
+        if (!dirUri) throw new Error(`suggestPublicTypeIndex: Cannot derive directory for ${me.uri}`)
+        return sym(dirUri + 'publicTypeIndex.ttl')
     }
     // Note this one is based off the pref file not the profile
 
     function suggestPrivateTypeIndex(preferencesFile: NamedNode) {
-        return sym(preferencesFile.doc().dir()?.uri + 'privateTypeIndex.ttl')
+        const dirUri = docDirUri(preferencesFile)
+        if (!dirUri) throw new Error(`suggestPrivateTypeIndex: Cannot derive directory for ${preferencesFile.uri}`)
+        return sym(dirUri + 'privateTypeIndex.ttl')
     }
 
     /*