SmarterStats: Server could not be contacted. This occurred while updating the site list. Error was: The device is not ready.

Greetings,

Here is what is in the log:

16:30:31 (Main)
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System.Exception: Unknown directory format
at SmarterTools.Common.IO.Ftp.FtpFileInfo.Parse(String line)
at SStatSvc.FTP.SiteFtpProcessor.#Uhd(FtpClientListEventArgs #DA)
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(251 Used/3656 Free)
16:30:31 (Main)
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System.Exception: Unknown directory format
at SmarterTools.Common.IO.Ftp.FtpFileInfo.Parse(String line)
at SStatSvc.FTP.SiteFtpProcessor.#Uhd(FtpClientListEventArgs #DA)
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(251 Used/3656 Free)
16:30:32 (Main)
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System.Exception: Unknown directory format
at SmarterTools.Common.IO.Ftp.FtpFileInfo.Parse(String line)
at SStatSvc.FTP.SiteFtpProcessor.#Uhd(FtpClientListEventArgs #DA)
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(252 Used/3562 Free)

16:32:01 (Gather_For_206) ABC123.com - Time = 512s Read = 3909 Skipped = 0 Records per minute = 420 (253 Used/3658 Free)
16:32:01 (Gather_For_210) XYZ987.com - Starting import (250 Used/3654 Free)
16:35:30 (Main)
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System.IO.IOException: The device is not ready.

at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.Directory.InternalCreateDirectory(String fullPath, String path, Object dirSecurityObj, Boolean checkHost)
at System.IO.Directory.InternalCreateDirectoryHelper(String path, Boolean checkHost)
at SStatSvc.Config.SiteSeoKeywordHistory.Save()
at SStatSvc.Config.SiteSeoKeywordHistory.Update(SiteSeoKeywordHistoryEntry[] entriesToUpdate)
at SStatSvc.Config.SiteSeoSettingsManager.SaveSiteSeoSettings(Int32 siteId, ConfigSeoSettings configSeoSettings)
at SStatSvc.Remoting.SiteList.FullSiteUpdate(String authString, String siteDefaults, String siteDetails, ConfigSeoSettings[] seoSettings, ConfigSiteTuning[] tuningSettings)
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(264 Used/3645 Free)