Overwriting files can fail on Windows

Using Firefox 3.6.10, Vista x64 hm prem, SP2.

Crashes w/ older Tor versions were rare for me. Since installing alpha ver listed, several crashes in 2 days. Doing nothing diff (except later ver of Firefox). No warning / signs of things going bad before get crash notice (Tor has stopped working).

These seem to be main warnings from log:

Vidala log errors:

Oct 15 12:59:21.741 [Warning] Error replacing "C:\Users<user name>\AppData\Roaming\tor\state": File exists Oct 15 12:59:21.743 [Warning] Unable to write state to file "C:\Users<user name>\AppData\Roaming\tor\state"

Note: the user\AppData path is not protected - the acct I was running in Vista at time of Tor crash has full access to the paths \ files mentioned above. The file: state.tmp DOES exist in the location mentioned. I can open / read - state.tmp - (after Tor crash & Tor is shut down). Has no obvious errors msgs in the file.

There's another file: "lock" (w/ 0 bytes) in same folder as state.tmp (after crash & Tor / Vidalia are shut down). Properties of the "lock" file show was created yesterday 10/14, & last mod 10/15. Its file attribs are "AN" - archived, not indexed? Other than that, no real info on it.

Err Rpt from Windows Vista x64 prepared to send to MS:

Problem signature: Problem Event Name: APPCRASH Application Name: tor.exe Application Version: 0.0.0.0 Application Timestamp: 4ca65e57 Fault Module Name: tor.exe Fault Module Version: 0.0.0.0 Fault Module Timestamp: 4ca65e57 Exception Code: c0000005 Exception Offset: 000c3bf9 OS Version: 6.0.6002.2.2.0.768.3 Locale ID: 1033 Additional Information 1: fd00 Additional Information 2: ea6f5fe8924aaa756324d57f87834160 Additional Information 3: fd00 Additional Information 4: ea6f5fe8924aaa756324d57f87834160

Trac:
Username: joebt