diff --git a/packages/backend-core/src/errors/index.js b/packages/backend-core/src/errors/index.js
index 139dd5a5a1..429aa68cad 100644
--- a/packages/backend-core/src/errors/index.js
+++ b/packages/backend-core/src/errors/index.js
@@ -8,8 +8,34 @@ const types = {
   ...licensing.types,
 }
 
+const context = {
+  ...licensing.context,
+}
+
+const getPublicError = err => {
+  let error
+  if (err.code || err.type) {
+    // add generic error information
+    error = {
+      code: err.code,
+      type: err.type,
+    }
+
+    if (err.code) {
+      error = {
+        ...error,
+        // get any additional context from this error
+        ...context[err.code](err),
+      }
+    }
+  }
+
+  return error
+}
+
 module.exports = {
   codes,
   types,
   UsageLimitError: licensing.UsageLimitError,
+  getPublicError,
 }
diff --git a/packages/backend-core/src/errors/licensing.js b/packages/backend-core/src/errors/licensing.js
index 111f21ad46..c05f9c561e 100644
--- a/packages/backend-core/src/errors/licensing.js
+++ b/packages/backend-core/src/errors/licensing.js
@@ -8,15 +8,25 @@ const codes = {
   USAGE_LIMIT_EXCEEDED: "usage_limit_exceeded",
 }
 
+const context = {
+  [codes.USAGE_LIMIT_EXCEEDED]: err => {
+    return {
+      limitName: err.limitName,
+    }
+  },
+}
+
 class UsageLimitError extends BudibaseError {
   constructor(message, limitName) {
     super(message, types.LICENSE_ERROR, codes.USAGE_LIMIT_EXCEEDED)
     this.limitName = limitName
+    this.status = 400
   }
 }
 
 module.exports = {
   types,
   codes,
+  context,
   UsageLimitError,
 }
diff --git a/packages/backend-core/src/objectStore/index.js b/packages/backend-core/src/objectStore/index.js
index b5d8475cee..2385149f4d 100644
--- a/packages/backend-core/src/objectStore/index.js
+++ b/packages/backend-core/src/objectStore/index.js
@@ -78,6 +78,7 @@ exports.ObjectStore = bucket => {
   const config = {
     s3ForcePathStyle: true,
     signatureVersion: "v4",
+    apiVersion: "2006-03-01",
     params: {
       Bucket: sanitizeBucket(bucket),
     },
@@ -102,17 +103,21 @@ exports.makeSureBucketExists = async (client, bucketName) => {
       .promise()
   } catch (err) {
     const promises = STATE.bucketCreationPromises
+    const doesntExist = err.statusCode === 404,
+      noAccess = err.statusCode === 403
     if (promises[bucketName]) {
       await promises[bucketName]
-    } else if (err.statusCode === 404) {
-      // bucket doesn't exist create it
-      promises[bucketName] = client
-        .createBucket({
-          Bucket: bucketName,
-        })
-        .promise()
-      await promises[bucketName]
-      delete promises[bucketName]
+    } else if (doesntExist || noAccess) {
+      if (doesntExist) {
+        // bucket doesn't exist create it
+        promises[bucketName] = client
+          .createBucket({
+            Bucket: bucketName,
+          })
+          .promise()
+        await promises[bucketName]
+        delete promises[bucketName]
+      }
       // public buckets are quite hidden in the system, make sure
       // no bucket is set accidentally
       if (PUBLIC_BUCKETS.includes(bucketName)) {
@@ -124,7 +129,7 @@ exports.makeSureBucketExists = async (client, bucketName) => {
           .promise()
       }
     } else {
-      throw err
+      throw new Error("Unable to write to object store bucket.")
     }
   }
 }
diff --git a/packages/server/src/api/index.js b/packages/server/src/api/index.js
index d5a4867291..0a1509d3cf 100644
--- a/packages/server/src/api/index.js
+++ b/packages/server/src/api/index.js
@@ -5,6 +5,7 @@ const {
   buildTenancyMiddleware,
   buildAppTenancyMiddleware,
 } = require("@budibase/backend-core/auth")
+const { errors } = require("@budibase/backend-core")
 const currentApp = require("../middleware/currentapp")
 const compress = require("koa-compress")
 const zlib = require("zlib")
@@ -64,10 +65,12 @@ router.use(async (ctx, next) => {
     await next()
   } catch (err) {
     ctx.status = err.status || err.statusCode || 500
+    const error = errors.getPublicError(err)
     ctx.body = {
       message: err.message,
       status: ctx.status,
       validationErrors: err.validation,
+      error,
     }
     if (env.NODE_ENV !== "jest") {
       ctx.log.error(err)
diff --git a/packages/server/src/middleware/usageQuota.ts b/packages/server/src/middleware/usageQuota.ts
index 499d4dd646..835f669a58 100644
--- a/packages/server/src/middleware/usageQuota.ts
+++ b/packages/server/src/middleware/usageQuota.ts
@@ -134,7 +134,7 @@ const appPreDelete = async (ctx: any, usageContext: any) => {
 
 const appPostDelete = async (ctx: any, usageContext: any) => {
   // delete the app rows from usage
-  const rowCount = usageContext[Pro.StaticQuotaName.ROWS].rowCount
+  const rowCount = usageContext[Pro.StaticQuotaName.APPS].rowCount
   if (rowCount) {
     await Pro.Licensing.Quotas.updateUsage(
       -rowCount,
diff --git a/packages/worker/src/api/index.js b/packages/worker/src/api/index.js
index f2d1047764..25899e2245 100644
--- a/packages/worker/src/api/index.js
+++ b/packages/worker/src/api/index.js
@@ -113,21 +113,7 @@ router.use(async (ctx, next) => {
   } catch (err) {
     ctx.log.error(err)
     ctx.status = err.status || err.statusCode || 500
-
-    let error
-    if (err.code || err.type) {
-      // add generic error information
-      error = {
-        code: err.code,
-        type: err.type,
-      }
-
-      // add specific error information
-      if (error.code === errors.codes.USAGE_LIMIT_EXCEEDED) {
-        error.limitName = err.limitName
-      }
-    }
-
+    const error = errors.getPublicError(err)
     ctx.body = {
       message: err.message,
       status: ctx.status,