diff --git a/apps/api/src/api/config_profiles.py b/apps/api/src/api/config_profiles.py
index 97d8907..08eef3b 100644
--- a/apps/api/src/api/config_profiles.py
+++ b/apps/api/src/api/config_profiles.py
@@ -429,7 +429,7 @@ async def update_config_profile(
         if field_name in ("project_id", "tool_type_id"):
             value = uuid.UUID(value) if value else None
         elif field_name == "mounts" and value is not None:
-            value = [m.model_dump() for m in value]
+            value = [m.model_dump() if not isinstance(m, dict) else m for m in value]
         setattr(profile, field_name, value)
 
     await session.commit()
diff --git a/apps/web/src/api/sessions.ts b/apps/web/src/api/sessions.ts
index 6fe0ae4..90bd206 100644
--- a/apps/web/src/api/sessions.ts
+++ b/apps/web/src/api/sessions.ts
@@ -71,13 +71,23 @@ export async function startInstance(
   projectId: string,
   repoId: string,
   instanceId: string,
-  configProfileId?: string
+  configProfileId?: string,
+  retries = 2
 ): Promise<{ status: string; url?: string }> {
-  const response = await apiClient.post(
-    `/projects/${projectId}/repositories/${repoId}/instances/${instanceId}/start`,
-    { config_profile_id: configProfileId }
-  );
-  return response.data;
+  try {
+    const response = await apiClient.post(
+      `/projects/${projectId}/repositories/${repoId}/instances/${instanceId}/start`,
+      { config_profile_id: configProfileId }
+    );
+    return response.data;
+  } catch (error: any) {
+    // Retry on network errors (e.g. Docker creating network interfaces)
+    if (retries > 0 && !error.response) {
+      await new Promise((r) => setTimeout(r, 1500));
+      return startInstance(projectId, repoId, instanceId, configProfileId, retries - 1);
+    }
+    throw error;
+  }
 }
 
 export async function stopInstance(
@@ -95,13 +105,23 @@ export async function restartInstance(
   projectId: string,
   repoId: string,
   instanceId: string,
-  configProfileId?: string
+  configProfileId?: string,
+  retries = 2
 ): Promise<{ status: string; url?: string }> {
-  const response = await apiClient.post(
-    `/projects/${projectId}/repositories/${repoId}/instances/${instanceId}/restart`,
-    { config_profile_id: configProfileId }
-  );
-  return response.data;
+  try {
+    const response = await apiClient.post(
+      `/projects/${projectId}/repositories/${repoId}/instances/${instanceId}/restart`,
+      { config_profile_id: configProfileId }
+    );
+    return response.data;
+  } catch (error: any) {
+    // Retry on network errors (e.g. Docker creating network interfaces)
+    if (retries > 0 && !error.response) {
+      await new Promise((r) => setTimeout(r, 1500));
+      return restartInstance(projectId, repoId, instanceId, configProfileId, retries - 1);
+    }
+    throw error;
+  }
 }
 
 export async function deleteInstance(