diff -ru a/crossapi.cpp b/crossapi.cpp
--- a/crossapi.cpp	2009-06-26 00:14:03.000000000 +0400
+++ b/crossapi.cpp	2022-09-15 01:20:27.974989505 +0300
@@ -200,7 +200,13 @@
 
 int CrossAPI_FindFirstFile(char *szFileName,CROSSAPI_FIND_DATA *cfd) {
 	struct stat inode;
-	stat(szFileName,&inode);
+	int rc = stat(szFileName,&inode);
+	if(rc<0) {
+		int e = errno;
+		char buff[1000];
+		fprintf(stderr, "Can't stat file \"%s\": %s\n", szFileName, strerror_r(e, buff, sizeof(buff)));
+		return -1;
+	}
 	strncpy(cfd->cFileName,szFileName,CROSSAPI_MAX_PATH);
 	if(inode.st_mode&S_IFDIR) cfd->bIsDirectory=true;
 	else cfd->bIsDirectory=false;
@@ -325,6 +331,9 @@
 	hFile=open(filename,O_RDONLY);
 
 	if(hFile==-1) {
+		int e = errno;
+		char buff[1000];
+		fprintf(stderr, "Can't open file \"%s\": %s\n", filename, strerror_r(e, buff, sizeof(buff)));
 		return NULL;
 	}
 	
diff -ru a/main.cpp b/main.cpp
--- a/main.cpp	2009-06-26 00:15:13.000000000 +0400
+++ b/main.cpp	2022-09-15 01:56:24.304838795 +0300
@@ -43,6 +43,7 @@
 int ProcessFile(char *szFileName,char *szLogFileName);
 
 int main(int argc, char *argv[]) {
+	int errors = 0;
 	int hFind;
 	int i;
 	CROSSAPI_FIND_DATA cfd;
@@ -126,7 +127,12 @@
 			if(!ch) break;
 			if(ch==0x0D||ch==0x0A) {
 				szPipedFileName[i]='\0';
-				if(*szPipedFileName) ProcessFile(szPipedFileName,szLogFile?szFullLogFile:NULL);
+				if(*szPipedFileName) {
+					int rc = ProcessFile(szPipedFileName,szLogFile?szFullLogFile:NULL);
+					if(rc != 0) {
+						++ errors;
+					}
+				}
 				i=0;
 			}
 			else {
@@ -148,13 +154,16 @@
 	
 			hFind=CrossAPI_FindFirstFile(szFile,&cfd);
 			if(hFind==-1) {
-				cerr<<"Cannot open input file "<<szFile<<'\n';
+				++ errors;
 				continue;
 			}
 			
 			do {
 				if(cfd.bIsDirectory) continue;
-				ProcessFile(cfd.cFileName,szLogFile?szFullLogFile:NULL);
+				int rc = ProcessFile(cfd.cFileName,szLogFile?szFullLogFile:NULL);
+				if(rc != 0) {
+					++ errors;
+				}
 			}while(CrossAPI_FindNextFile(hFind,&cfd));
 		
 			CrossAPI_FindClose(hFind);
@@ -163,7 +172,7 @@
 		}
 	}
 
-	return 0;
+	return errors ? 1 : 0;
 }
 
 int ProcessFile(char *szFileName,char *szLogFileName) {
@@ -179,16 +188,15 @@
 	pImage=(unsigned char *)CrossAPI_MapFile(szFileName);
 
 	if(!pImage) {
-		cerr<<"Cannot open input file \""<<szFileName<<"\" or it is empty\n";
-		return 0;
+		return -1;
 	}
 	
 	if(szLogFileName) {
 		log_out.open(szLogFileName,ios::out|ios::app|ios::binary);
 		if(!log_out) {
-			cerr<<"Cannot open log file\n";
+			cerr<<"Cannot open log file \""<<szLogFileName<<"\"\n";
 			CrossAPI_UnmapFile(pImage);
-			return 0;
+			return -1;
 		}
 		out=&log_out;
 	}
@@ -210,7 +218,7 @@
 			cerr<<"Cannot open temporary file\n";
 			CrossAPI_UnmapFile(pImage);
 			log_out.close();
-			return 0;
+			return -1;
 		}
 
 		cout<<"Rebuilding file \""<<szFileName<<"\"...\n";
@@ -220,7 +228,7 @@
 			CrossAPI_CloseFile(hData);
 			CrossAPI_UnmapFile(pImage);
 			CrossAPI_DeleteFile(pcBuffer);
-			return 0;
+			return -1;
 		}
 
 		CrossAPI_CloseFile(hData);
@@ -234,12 +242,12 @@
 		if(!CrossAPI_MoveFile((char *)pcBuffer2,szFileName)) {
 			cerr<<"Error renaming \""<<szFileName<<"\"\n";
 			log_out.close();
-			return 0;
+			return -1;
 		}
 		if(!CrossAPI_MoveFile(szFileName,pcBuffer)) {
 			cerr<<"Error renaming temporary file\n";
 			log_out.close();
-			return 0;
+			return -1;
 		}
 		CrossAPI_SetFileAttr(szFileName,&cfa,bKeepTimestamps);
 		if(bDeleteBaks) CrossAPI_DeleteFile((char *)pcBuffer2);
@@ -252,9 +260,7 @@
 
 	if(szLogFileName) log_out.close();
 
-	cout<<"Done!\n";
-	
-	return 0;
+	return mpginfo.iErrors&&!FixErrors;
 }