yellowTAB had legal access to the sources of BeOS; it is now known that yellowTAB could not have developed ZETA to the extent that they did without access to the source code, but doubts remain as to whether yellowTAB actually had legal access to the code or not. Furthermore, critics did not see ZETA as real advancement of BeOS, but rather as an unfinished and buggy operating system loaded with third party applications that were either obsolete, unsupported, or non-functional. This was particularly true in the initial releases of ZETA, and it was in clear conflict with the attention to detail that BeOS used to stand for, disappointing the BeOS community who at one point had high expectations for ZETA. While yellowTAB did clean up the selection of bundled applications in following versions, ZETA remains somewhat unstable when compared to other modern desktop operating systems. But perhaps the most criticized practice by yellowTAB was its tendency to make claims that turned out to be either half truths or vague enough that they could not be confirmed. Not only did yellowTAB announce certain developments that never materialized (such as Java, and ODBC among others), but it would also support certain capabilities beyond what ZETA was actually capable of (e.g., compatibility with MS Office). According to sources close to yellowTAB, this is believed to have led to a high return rate from customers that bought ZETA from the German RTL TV shopping channel, and the reason for which RTL eventually stopped selling the product. There was some criticism within the greater BeOS community regarding the lack of a "personal" edition of Zeta. This is a somewhat controversial standpoint, given the history of BeOS and Be Inc. Throughout the life of the Intel version of BeOS, Be Inc regularly created and distributed BeOS demo discs on CD. The discs were somewhat crippled and would not mount a BFS partition nor would they install to a physical hard drive. They served as a test for hardware support and a taster for the Operating System. Zeta was offered in a similar way – demo discs with similar limitations were made available. Unfortunately, many in the BeOS community, especially those who came to BeOS post the demise of Be Inc, tended to have an issue with the "crippled" demo discs. The controversy is as follows: the final commercial release of BeOS, Revision 5, included a freely