X1 fails to start; services fail

I was very happy with X1. Until yesterday. It started throwing the error message: "Unable to connect to X1 Service: All attempts to start and connect to X1ServiceHost failed." Now it appears to start up, but then terminates completely.

AppCrashView reports:

[quote]Version=1
EventType=BEX64
EventTime=130362084096774089
ReportType=2
Consent=1
UploadTime=130362084097344495
ReportIdentifier=306a62a4-8f93-11e3-bea7-74d02b9b4d22
IntegratorReportIdentifier=306a62a3-8f93-11e3-bea7-74d02b9b4d22
NsAppName=X1ServiceHost.exe
Response.BucketId=ba04f00c70e06fa214b95ec3bd3cd9e3
Response.BucketTable=5
Response.LegacyBucketId=81615984869
Response.type=4
Sig[0].Name=Application Name
Sig[0].Value=X1ServiceHost.exe
Sig[1].Name=Application Version
Sig[1].Value=8.1.1.5029
Sig[2].Name=Application Timestamp
Sig[2].Value=52b0dbb6
Sig[3].Name=Fault Module Name
Sig[3].Value=AppvIsvSubsystems64.dll_unloaded
Sig[4].Name=Fault Module Version
Sig[4].Value=5.151.36.0
Sig[5].Name=Fault Module Timestamp
Sig[5].Value=515dec46
Sig[6].Name=Exception Offset
Sig[6].Value=00000000000a3f08
Sig[7].Name=Exception Code
Sig[7].Value=c0000005
Sig[8].Name=Exception Data
Sig[8].Value=0000000000000008
DynamicSig[1].Name=OS Version
DynamicSig[1].Value=6.3.9600.2.0.0.768.101
DynamicSig[2].Name=Locale ID
DynamicSig[2].Value=1033
DynamicSig[22].Name=Additional Information 1
DynamicSig[22].Value=4e81
DynamicSig[23].Name=Additional Information 2
DynamicSig[23].Value=4e81ffa607bffc1cc9e5fddf3d731144
DynamicSig[24].Name=Additional Information 3
DynamicSig[24].Value=76e7
DynamicSig[25].Name=Additional Information 4
DynamicSig[25].Value=76e79a1323587abc1d6877b16f997e71
UI[2]=C:\Program Files\X1 Search\X1ServiceHost.exe
UI[3]=X1 Search has stopped working
UI[4]=Windows can check online for a solution to the problem.
UI[5]=Check online for a solution and close the program
UI[6]=Check online for a solution later and close the program
UI[7]=Close the program
.
.
.

Any help here?

---