workerror

docz/docs/09-miscellany/02-errors.md

@@ -8,6 +8,10 @@ Here are some common errors and their resolutions.  This is not comprehensive.
 The [issue tracker](https://git.sheetjs.com/SheetJS/sheetjs/issues) has a
 wealth of information and user-contributed examples.
 
+**Many of these errors have been fixed in newer releases!**  Ensure that the
+latest version of the library is being used. Some legacy endpoints are out of
+date.  [Review the Installation instructions.](../getting-started#installation)
+
 If issues are not covered in the docs or the issue tracker, or if a solution is
 not discussed in the documentation, we would appreciate a bug report.
 
@@ -21,6 +25,15 @@ workarounds and solutions!
 
 ## Errors
 
+#### "Aw Snap!" or "Oops, an error has occurred!"
+
+Browsers have strict memory limits and large spreadsheets can exceed the limits.
+
+When processing very large files is a must, consider running processes in the
+server with NodeJS or some other server-side technology.
+
+If the files are small, please [report to our issue tracker](https://git.sheetjs.com/sheetjs/sheetjs/issues)
+
 #### SCRIPT5022: DataCloneError
 
 IE10 does not properly support `Transferable`.
@@ -91,6 +104,11 @@ document.getElementById('file-object').addEventListener("change", function(e) {
 
 </details>
 
+#### Browser is stuck!
+
+By default, operations run in the main renderer context and block the browser
+from updating. [Web Workers](../demos/worker) offload the hard work to separate
+contexts, freeing up the renderer to update.
 
 ## Data Issues