LacerteSDK is broken with latest Lacerte TY23 release. We're working on the fix and will release by today EOD.
There are new SDK files on the website, but there is a note
"Update Lacerte TY23 to R4.5 before taking the LacerteSDK update. It’s a prerequisite to use LacerteSDK, otherwise Lacerte might not work."
I believe I'm on the latest Lacerte version 44.0221 so I'm not sure what you mean by R4.5?
We will update the messaging. R4.5 means 44.0221
If you use latest SDK with 44.0221, everything should work without an issue.