These steps are the operation I've done where I've encounteredthe error.Despite my expectation, it happened even after my cleaninstallation of both FS2004 and RC4.2, and I finally lostmy way how to do next other than asking for help at this forum.Please, help.....I don't want to give up with RC4.2 as I know its potentialpleasure on it!(1) I installed FS2004, and I applied the ver9.1 patch on, after thorough uninstallation of it.(2) No addon software applied at all, at this moment, even FSUIPC.(3) I installed RC4.2 from the CD version which I bought last month (2007/April).(4) The RC4.2 installation succeeded and I put the key code that I obtained through the email registration.(5) I started the RC4.2 and I set the path for the flight saving directly, .flt/.wx as "c:/Documents and Settings/mydocuments/flight simulator files/".(6) After starting RC4.2, I've done the 'rebuild scenery'.(7) I started FS2004 and created a new flight, from Kansai International to Hiroshima Airport, saved it.(8) I started RC4.2 and loaded the saved flight plan.(9) I did not change any other options at all, at this time.(10) Went back to FS2004, and confirmed that FSUIPC display screen indicates options to choose.(11) The existing version of FSUIPC is 3.70.(12) I chose Clearance Delivery at number 1 option.(13) Pilot spoke out the request with a little unsmoothness (I think this is another issue, but not for now).(14) The controller return the clearance upto the initial flight level.(15) This is when I encountered the Run Time Error 5, RadarContact.rcv4module.chatterSaveWave.(16) I cannot continue playing with RC4.2 on FS2004 anymore. FS2004 keeps running without problem, though.I'm now at a total loss what to do...(very sadly).There is no chance to flight with RC4.2 without support...I doubt some of the wave files collapsed or else.But I don't know how to find the troublesome files and to fix(or replace?) them by myself. Actually, upto this time today,I have tried many possible things, such as changing soundcard to the new one, as applying additional memory cards(plus 1GBytes), deleting unenecessary registry(s) with a CommercialTool, checking drivers, seeking any kinds of solution throughthis forum etc.etc...All failed unfortunately. As a matter of fact, I started totweak the problems firstly trying to avoid the unsmooth pilot/controller voice that do not finish upto the end,if I set "Japan Air 719", it says only upto "seven one",and that's it.I have emailed the log to jd for the duplication of the error.Please advise what to do for me to solve the error, and giveme a chance to flight with.I desperately want to play with RC4.2 since I have started toplay with RCV3.1 (no problem occurred)where I found great happiness with flights with it!Thank you in advance for your great help!Wish to see a prompt feedback.==============================================================Operating System: Windows XP Professional Service Pack 2Language : Japanese (Regional Setting: Japanese)Mother Board : INTEL D875BZLKProcessor : Intel® Pentium® 4 CPU 3.00GHzMemory : 2046MB RAMDirectX Version : DirectX 9.0c (4.09.0000.0904)Graphic Card : ATI Technologies Inc. RADEON 9500 PRO AGPMonitor : Gateway FPD1500Sound Card : Creative SB X-Fi Audio==============================================================FS2004 ver.9.1RCV ver4.2.3831FSUIPC ver.3.70==============================================================

What directory do you have 4.2 installed into?Do you have write permissions to that directory?And I think fsuipc 3.74 is the current version of fsuipc. Check the link pinned at the top of the forumi just noticed, are you running japanese version of xp? i think i have a problem with that.jd

Thank you jd for your reply. I appreciate.>What directory do you have 4.2 installed into?Right under the "C:/Program Files/" directory.>Do you have write permissions to that directory?I logged into the Windows by "Administrator" andhave full permissions of the access.(Stand alone PC, no LAN).>And I think fsuipc 3.74 is the current version of fsuipc.>Check the link pinned at the top of the forumI know that and I'll replace the current 3.70 to 3.74.>i just noticed, are you running japanese version of xp? i>think i have a problem with that.You are right, I'm ruuning Japanese version of XP.(I am a Japanese.)Any suggestion? I may need your help.With very best regardsryuji