Outside unidentified problems and errors in SPIS, some difficulties can be result from a memory limitation of this last one. This may typically appears when you are running memory costly tasks like DataFields mapping, UI to Num conversion, runnint SPIS-NUM or extract data.

With modern JVMs (higher than 1.6), the JVM does not crash always when the maximum of memory stack is reached. But the application, can slowdown, generate error due to the impossibility to allocate the needed new instances and finally freeze.

To avoid such problem, check and eventually increase the XMX variable in the spis-ui.properties file and re-run SPIS.

Of course, the XMX variable is limited by the total amount of memory available on your computer...

The SPIS's team.