Because Windows, because Windows. Now it upgrades correctly from 1.0.1, including automatic driver update from NDIS5 to NDIS6. Also a bit more robust on creating new ports, just in case.

service/OneService.cpp

@@ -943,6 +943,17 @@ public:
 							friendlyName,
 							StapFrameHandler,
 							(void *)this))).first;
+					} catch (std::exception &exc) {
+#ifdef __WINDOWS__
+						FILE *tapFailLog = fopen((_homePath + ZT_PATH_SEPARATOR_S"port_error_log.txt").c_str(),"a");
+						if (tapFailLog) {
+							fprintf(tapFailLog,"%.16llx: %s"ZT_EOL_S,(unsigned long long)nwid,exc.what());
+							fclose(tapFailLog);
+						}
+#else
+						fprintf(stderr,"ERROR: unable to configure virtual network port: %s"ZT_EOL_S,exc.what());
+#endif
+						return -999;
 					} catch ( ... ) {
 						return -999; // tap init failed
 					}