Nightly builds of RISC OS since 2015-07-05 include zero page protection, which forbids accesses to "zero page", an area of system memory reserved for use by the Kernel. Some software may still make references to these locations, usually because the programmer has not checked a pointer for validity before using it. Please see "this post":/forum/forums/1/topics/3418#posts-44584 for a more in depth explanation of what this is about. A compatibility/logging module called "ZeroPain" is available that logs such illegal accesses and allows the buggy application to continue to run in the short term. The log permits the problems to be identified so that application writers can fix the bugs. In order to keep duplicated reports to a minimum, the following alphabetical lists record the known status of system components (part of RISC OS itself) and third party software (maintained by other authors). If not listed and you find the software fails, simply send the author the log following the [[Reporting bugs|general guidance for reporting bugs]] to give as much detail as possible. h1. System components h2. Open None h2. Resolved h3. Toolbox Menu Menu 0.38 will under some circumstances pass a null pointer. "Menu 0.39":/viewer/view/apache/RiscOS/Sources/Toolbox/Menu/VersionNum?only_with_tag=Menu-0_39 contains a fix for a known issue with !FTPc 1.51, and "Menu 0.40":/viewer/view/apache/RiscOS/Sources/Toolbox/Menu/VersionNum?only_with_tag=Menu-0_40 fixes the remaining known issues. h1. Third party components h2. Open h3. Messenger Pro (RComp) Version 7.08. The author was advised "19-Feb-2016":/forum/forums/5/topics/3920. h3. NewsUK (M Hussain-Gambles/RComp) NewsUK 1.28 is affected and will not currently work. The author was advised 15-Jul-2016, and is "working on an update":/forum/forums/5/topics/6352. h3. PlingStore (RComp) Version 1.31 aborts with NULL pointer read at address &174FC, the author was advised 07-Jan-2017. Version 1.32 aborts with a read of &16 from &10D7C, and also read of &0 from &2E030, the author was advised 21-Feb-2018. h2. Resolved h3. Aemulor Version 2.39 and earlier are incompatible. Adrian Lees has updated the program. Version "2.40 and later":http://sendiri.co.uk/aemulor/index.html are compatible with zero page protection. h3. CashBook Version 1.30 suffers from Zero Pain errors when closing windows. Versions 1.35 and onwards are believed to be free of issues. h3. ChartDraw Version 3.52 is free of "Zero pain" errors with versions of RISC OS 5.23 dated 8-Oct-2015 (or later). h3. ConvImgs Version 1.00 is free of "Zero pain" errors with versions of RISC OS 5.23 dated 8-Oct-2015 (or later). h3. FTPc Version 1.51 is available for test from "here":http://ftpc.iconbar.com/ Version 1.51 is free of "Zero pain'' errors with versions of OS5.23 dated 15-Oct-2015 and later, specifically Menu module 0.39 is required. h3. GraphDraw Version 3.01 is free of "Zero pain" errors with versions of RISC OS 5.23 dated 8-Oct-2015 (or later). h3. ID3TagEd Version 0.51 has some strange "Zero pain" errors. Upgrade to "version 0.52":http://www.chrisjohnson.plus.com/software/id3taged.html or later. h3. Locate Version 2.00 suffers from Zero Pain errors when processing the contents of the Search dialogue box. Versions 2.10 and onwards are believed to be free of issues. h3. Photodesk Spray can tool and possibly other make zero page accesses. The distributor is aware of the problem. Fixed in "version 3.14":http://www.cjemicros.co.uk/micros/individual/newprodpages/prodinfo.php?prodcode=OLY-PHOTOL update. h3. PrintPDF Version 1.00 is believed to be free of Zero Pain issues. h3. Snapper Version 1.24 is free of "Zero pain" errors with versions of RISC OS 5.23 dated 8-Oct-2015 (or later). h3. SyncDiscs Version 1.28 is free of "Zero pain" errors with versions of RISC OS 5.23 dated 8-Oct-2015 (or later). h3. Text>Draw Version 1.31 is free of "Zero pain" errors with versions of RISC OS 5.23 dated 8-Oct-2015 (or later). h3. TranJPEG Version 1.30 is free of "Zero pain" errors with versions of RISC OS 5.23 dated 8-Oct-2015 (or later). h3. UnitConv Version 2.35 is free of "Zero pain" errors with versions of RISC OS 5.23 dated 8-Oct-2015 (or later). h3. WeatherUK (M Hussain-Gambles/RComp) "WeatherUK 1.11":http://www.paymentlabs.com/riscos/weatheruk has been fixed not to call Window_ExtractGadgetInfo with a NULL window. h3. WimpWorks Version 2.38 would read address &00000007 during processing of the EVERY() command. Fixed in "version 2.39":http://www.jaffasoft.co.uk/wwv2/ update.