As recommended here: http://forum.world.st/Anybody-using-Orca-Smalltalk-to-JavaScript-td4960519.h... by @Serge, I loaded the code and tried to run it. But, I almost tend to say "as usual", *it fails at first try*! I "did" the code in the Playground window but nothing happens, no code is written into the selected directories. When I do "inspect it", I get a window (see screenshots), which does not really tell me either, what has happened (due to my lack of Pharo knowledge). Despite my over 20 years of full-time Smalltalk development, I have NOT any experience with either Squeak nor Pharo and most of my attempts to use them were very frustrating. Also, I do not feel like trying around, if and because: - even the very first test fails immediately - there is no meaningful documentation available - the classes I looked at were all undocumented (for me, a 100% no-go, never ever acceptable) And then, of course, also the test cases fail, because there is nothing in the diretories, where some earlier output was expected. Pardon, but professionality and confidence causing systems look very different too me. I am writing this with sadness, because it is certainly not my first such experience in the Squeak/Pharo area. There are some very bright people engaged here, but for some reason many of them lack some important aspects to be called professionals. Just FYI: My very first application software, an "ERP" system, which I started developing more than 35 years ago in horrible Basic, is still feeding a company (not mine) with >25 people as their sole product and has a couple of hundred business users. Some of my former staff is still working there and they said, this is only possible because I did force them "dictatorially" to document / comment every single line of code. In the beginning, they hated me for that. Today they are very thanksful. P.S. I DO have a very fast horse, because this is what one needs when telling the truth - in these days when truth is the worst "hate crime". -- View this message in context: http://forum.world.st/PharoJS-crashes-at-first-try-tp4960686.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.