So am trying to set up VSC with the Netsuite Upload plugin but am getting an error when trying to retrieve the directory:

ERROR downloading directory. | NetSuite Error Details: | error.SuiteScriptError | SSS_INVALID_SRCH_OPERATOR | An nlobjSearchFilter contains an invalid operator, or is not in proper syntax: parent. |  | Remote Stack: | each(N/searchObject),getInnerFolders(/SuiteScripts/vscodeExtensionRestlet.js:207),getDirectory(/SuiteScripts/vscodeExtensionRestlet.js:281),getFunc(/SuiteScripts/vscodeExtensionRestlet.js:385) | HTTP Status: 400 | HTTP Error: Bad Request | Local Stack: | Error: Bad Request 	at Request.callback

Any ideas what the problem can be?

might want to try debugging the code, this sort of error is usually from passing in an invalid value for a filter